Various codegen tweaks.
--HG-- branch : dtrg-videocore
This commit is contained in:
David Given
parent
2c7ee27206
commit
98a51732ab
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@ -27,7 +27,6 @@ PROPERTIES
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GPR /* any GPR */
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REG /* any allocatable GPR */
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STACKABLE /* a push/popable register (r0, r6, r16, fp) */
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GPR0 GPR1 GPR2 GPR3 GPR4 GPR5 GPR6 GPR7
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GPR8 GPR9 GPR10 GPR11 GPR12 GPR13 GPR14 GPR15
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@ -37,13 +36,13 @@ PROPERTIES
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REGISTERS
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R0("r0") : GPR, REG, STACKABLE, GPR0.
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R0("r0") : GPR, REG, GPR0.
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R1("r1") : GPR, REG, GPR1.
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R2("r2") : GPR, REG, GPR2.
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R3("r3") : GPR, REG, GPR3.
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R4("r4") : GPR, REG, GPR4.
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R5("r5") : GPR, REG, GPR5.
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R6("r6") : GPR, REG, STACKABLE, GPR6 regvar.
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R6("r6") : GPR, REG, GPR6 regvar.
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R7("r7") : GPR, REG, GPR7 regvar.
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R8("r8") : GPR, REG, GPR8 regvar.
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R9("r9") : GPR, REG, GPR9 regvar.
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@ -54,14 +53,16 @@ REGISTERS
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R14("r14") : GPR, REG, GPR14 regvar.
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GP("r15") : GPR, GPRGP.
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R16("r16") : GPR, GPR16.
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R23("r23") : GPR.
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FP("fp") : GPR, GPRFP, STACKABLE.
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FP("fp") : GPR, GPRFP.
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SP("sp") : GPR, GPRSP.
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LR("lr") : GPR, GPRLR.
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PC("pc") : GPR, GPRPC.
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/* r26 to r31 are special and the code generator doesn't touch them. */
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#define SCRATCH R23
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#define SCRATCH R16
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TOKENS
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@ -69,6 +70,7 @@ TOKENS
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GPROFFSET = { GPR reg; INT off; } 4 off "(" reg ")".
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GPRGPR = { GPR reg1; GPR reg2; } 4 "(" reg1 "," reg2 ")".
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GPRINC = { GPR reg; } 4 "(" reg ")++".
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/* Primitives */
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@ -119,6 +121,7 @@ INSTRUCTIONS
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bgt "b.gt" LABEL:ro.
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bgt "b.gt" LABEL:ro.
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bhi "b.hi" LABEL:ro.
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bset XREG:rw, XREG+CONST:ro.
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b XREG+LABEL:ro.
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bl XREG+LABEL:ro.
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cmp XREG:ro, XREG+CONST:ro kills :cc.
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@ -132,6 +135,7 @@ INSTRUCTIONS
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fdiv XREG:wo, XREG:ro, XREG:ro.
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fmul XREG:wo, XREG:ro, XREG:ro.
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fsub XREG:wo, XREG:ro, XREG:ro.
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ld XREG:wo, GPRINC:rw.
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ld XREG:wo, GPROFFSET+GPRGPR+LABEL:ro.
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ldb XREG:wo, GPROFFSET+GPRGPR+LABEL:ro.
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ldh XREG:wo, GPROFFSET+GPRGPR+LABEL:ro.
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@ -144,9 +148,10 @@ INSTRUCTIONS
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mul XREG:rw, XREG+CONST:ro.
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neg XREG:rw, XREG+CONST:ro.
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or XREG:rw, XREG+CONST:ro.
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pop STACKABLE:wo.
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pop STACKABLE:wo, GPRLR+GPRPC:wo.
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push STACKABLE:ro.
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pop GPR0+GPR6+GPR16+GPRFP+GPRPC:wo.
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pop GPR0+GPR6+GPR16+GPRFP:wo, GPRPC:wo.
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push GPR0+GPR6+GPR16+GPRFP+GPRLR:ro.
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push GPR0+GPR6+GPR16+GPRFP:ro, GPRLR:ro.
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sub XREG:wo, XREG:ro, CONST+XREG:ro.
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sub XREG:rw, XREG+CONST:ro.
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st XREG:ro, GPROFFSET+GPRGPR+LABEL:ro.
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@ -155,6 +160,7 @@ INSTRUCTIONS
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sths XREG:ro, GPROFFSET+GPRGPR+LABEL:ro.
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invalid "invalid".
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comment "!" LABEL:ro.
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@ -210,53 +216,35 @@ TESTS
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STACKINGRULES
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from STACKABLE to STACK
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from GPR0+GPR6+GPR16 to STACK
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gen
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comment {LABEL, "push stackable"}
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push %1
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from GPR to STACK
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uses STACKABLE
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from OP+GPRI to STACK
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gen
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move %1, %a
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push %a
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from GPR to STACK
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gen
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sub SP, SP, {CONST, 4}
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st %1, {GPROFFSET, SP, 0}
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from GPRE to STACK
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uses STACKABLE
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gen
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move %1, %a
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push %a
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from GPRE to STACK
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gen
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sub SP, {CONST, 4}
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st %1, {GPROFFSET, SP, 0}
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from OP to STACK
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uses STACKABLE
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gen
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move %1, %a
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push %a
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from OP to STACK
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gen
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COMMENT("fallback stack")
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comment {LABEL, "push via scratch"}
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move %1, SCRATCH
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sub SP, SP, {CONST, 4}
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st SCRATCH, {GPROFFSET, SP, 0}
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push SCRATCH
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COERCIONS
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from GPRE
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from GPRI
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uses reusing %1, REG=%1
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yields %a
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from GPR
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yields {GPRE, %1}
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from OP
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uses GPR0
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gen
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move %1, %a
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yields %a
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from OP
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uses REG
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gen
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@ -264,10 +252,10 @@ COERCIONS
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yields %a
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from STACK
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uses STACKABLE
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uses REG
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gen
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COMMENT("coerce STACK->REG")
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pop %a
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pop R0
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move R0, %a
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yields %a
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@ -619,10 +607,8 @@ PATTERNS
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los QUAD
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pat los /* Load arbitrary size */
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with STACK
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kills ALL
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gen
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bl {LABEL, ".los"}
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leaving
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cal ".los"
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pat sti $1==BYTE /* Store byte indirect */
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with LABEL GPRI+SIGNEX8+SIGNEX16
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@ -735,6 +721,9 @@ PATTERNS
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/* Word arithmetic */
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pat loc adi $1==0 /* Add nothing */
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/* nop */
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pat adi $1==QUAD /* Add word (second + top) */
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with GPRI+CONST GPRI
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uses reusing %2, REG=%2
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@ -747,6 +736,9 @@ PATTERNS
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add %a, %2
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yields %a
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pat loc sbi $1==0 /* Subtract nothing */
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/* nop */
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pat sbi $1==QUAD /* Subtract word (second - top) */
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with GPRI+CONST GPRI
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uses reusing %2, REG=%2
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@ -886,16 +878,6 @@ PATTERNS
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yields %a
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pat and !defined($1) /* AND set */
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with STACK
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gen
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bl {LABEL, ".and"}
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pat ior !defined($1) /* OR set */
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with STACK
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gen
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bl {LABEL, ".ior"}
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pat xor $1==4 /* XOR word */
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with GPR GPR
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yields {XOR_RR, %1, %2}
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@ -1055,32 +1037,47 @@ PATTERNS
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/* Sets */
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pat set defined($1) /* Create word with set bit */
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pat set $1==QUAD /* Create quad with one bit set */
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with GPRI
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uses reusing %1, REG
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gen
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bset %a, %1
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yields %a
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pat set defined($1) /* Any other set */
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leaving
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loc 1
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exg $1
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sli $1
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loc $1
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cal ".set"
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pat set !defined($1) /* Create structure with set bit (variable) */
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with STACK
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gen
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bl {LABEL, ".set"}
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leaving
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cal ".set"
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pat inn defined($1) /* Test for set bit */
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leaving
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set QUAD
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and QUAD
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set $1
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and $1
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pat inn !defined($1) /* Test for set bit (variable) */
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with GPR0 STACK
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gen
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bl {LABEL, ".inn"}
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yields R0
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leaving
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cal ".inn"
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pat ior !defined($1) /* Or two sets */
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with STACK
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gen
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bl {LABEL, ".ior"}
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pat ior !nicesize($1) /* OR set */
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leaving
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cal ".ior"
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pat ior !defined($1) /* OR set */
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leaving
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cal ".ior"
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pat and !nicesize($1) /* AND set */
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leaving
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loc $1
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cal ".and"
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pat and !defined($1) /* AND set */
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leaving
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cal ".and"
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@ -1171,15 +1168,23 @@ PATTERNS
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pat ble call anyb("b.le") /* Branch if signed second <= top */
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proc cmu_z example cmu zeq
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with GPR+CONST GPRI STACK
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with GPRI+CONST GPRI STACK
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gen
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cmp %2, %1
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beq[1] {LABEL, $2}
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pat cmu zeq call cmu_z("b.eq") /* Branch if unsigned second == top */
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pat cmu zne call cmu_z("b.ne") /* Branch if unsigned second != top */
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pat cmu zgt call cmu_z("b.hi") /* Branch if unsigned second > top */
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pat cmu zlt call cmu_z("b.lo") /* Branch if unsigned second < top */
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pat cmu zge call cmu_z("b.hs") /* Branch if unsigned second >= top */
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pat cmu zle call cmu_z("b.ls") /* Branch if unsigned second <= top */
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pat cmi zeq call cmu_z("b.eq") /* Branch if signed second == top */
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pat cmi zne call cmu_z("b.ne") /* Branch if signed second != top */
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pat cmi zgt call cmu_z("b.gt") /* Branch if signed second > top */
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pat cmi zlt call cmu_z("b.lt") /* Branch if signed second < top */
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pat cmi zge call cmu_z("b.ge") /* Branch if signed second >= top */
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pat cmi zle call cmu_z("b.le") /* Branch if signed second <= top */
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proc cmf_z example cmu zeq
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with GPRI GPRI STACK
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@ -1268,6 +1273,9 @@ PATTERNS
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pat lfr $1==QUAD /* Load function result, word */
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yields R0
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pat lfr $1==QUAD*2 /* Load function result, word */
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yields R1 R0
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pat ret $1==0 /* Return from procedure */
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gen
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return
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@ -1280,9 +1288,12 @@ PATTERNS
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return
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mov SP, FP
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pop FP, PC
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with STACK
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pat ret $1==QUAD*2 /* Return from procedure, word */
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with GPRI GPRI
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gen
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pop R0
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move %1, R0
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move %2, R1
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return
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mov SP, FP
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pop FP, PC
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@ -1335,9 +1346,8 @@ PATTERNS
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ste ".ignmask"
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pat trp /* Raise EM trap */
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with GPR0
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gen
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bl {LABEL, ".trap"}
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leaving
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cal ".trap"
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pat sig /* Set trap handler */
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leaving
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@ -1471,43 +1481,34 @@ PATTERNS
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nop
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pat loc loc cfi $1==$2 && $1==QUAD /* Convert float -> integer */
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with GPR0
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gen
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bl {LABEL, ".cfi"}
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yields R0
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leaving
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cal ".cfi"
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lfr QUAD
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pat loc loc cfu $1==$2 && $1==QUAD /* Convert float -> unsigned */
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with GPR0
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gen
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bl {LABEL, ".cfu"}
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yields R0
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leaving
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cal ".cfu"
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lfr QUAD
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pat loc loc cif $1==$2 && $1==QUAD /* Convert integer -> float */
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with GPR0
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gen
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bl {LABEL, ".cif"}
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yields R0
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leaving
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cal ".cif"
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lfr QUAD
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pat loc loc cuf $1==$2 && $1==QUAD /* Convert unsigned -> float */
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with GPR0
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gen
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bl {LABEL, ".cuf"}
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yields R0
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leaving
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cal ".cuf"
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lfr QUAD
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pat fef /* Split float */
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with GPR0
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kills GPR1
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gen
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bl {LABEL, ".fef"}
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yields R0 R1
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leaving
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cal ".cuf"
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lfr QUAD*2
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pat fif /* Multiply float and split (?) */
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with GPRI GPRI
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kills GPR0, GPR1
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gen
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fmul R0, %2, %1
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bl {LABEL, ".fef"}
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yields R0 R1
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leaving
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mlf QUAD
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fef
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pat zrf /* Load a floating zero */
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leaving
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