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radeon/llvm: Set the neverHasSideEffects bit on more instructions

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This flag makes these instructions candidates for the dead code
elimination and common subexpression elimination.
This commit is contained in:
Tom Stellard 2012-08-29 10:20:24 -04:00
parent cf4ac69928
commit 733c28a0d9
1 changed files with 2 additions and 0 deletions
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2
src/gallium/drivers/radeon/SIInstructions.td
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@ -12,6 +12,7 @@ def isSI : Predicate<"Subtarget.device()"
let Predicates = [isSI] in {
let neverHasSideEffects = 1 in {
def S_MOV_B32 : SOP1_32 <0x00000003, "S_MOV_B32", []>;
def S_MOV_B64 : SOP1_64 <0x00000004, "S_MOV_B64", []>;
def S_CMOV_B32 : SOP1_32 <0x00000005, "S_CMOV_B32", []>;
@ -22,6 +23,7 @@ def S_WQM_B32 : SOP1_32 <0x00000009, "S_WQM_B32", []>;
def S_WQM_B64 : SOP1_64 <0x0000000a, "S_WQM_B64", []>;
def S_BREV_B32 : SOP1_32 <0x0000000b, "S_BREV_B32", []>;
def S_BREV_B64 : SOP1_64 <0x0000000c, "S_BREV_B64", []>;
} // End neverHasSideEffects = 1
////def S_BCNT0_I32_B32 : SOP1_BCNT0 <0x0000000d, "S_BCNT0_I32_B32", []>;
////def S_BCNT0_I32_B64 : SOP1_BCNT0 <0x0000000e, "S_BCNT0_I32_B64", []>;
////def S_BCNT1_I32_B32 : SOP1_BCNT1 <0x0000000f, "S_BCNT1_I32_B32", []>;