diff options
| -rw-r--r-- | llvm/include/llvm/Analysis/TargetTransformInfoImpl.h | 4 | ||||
| -rw-r--r-- | llvm/test/Analysis/CostModel/X86/costmodel.ll | 18 |
2 files changed, 21 insertions, 1 deletions
diff --git a/llvm/include/llvm/Analysis/TargetTransformInfoImpl.h b/llvm/include/llvm/Analysis/TargetTransformInfoImpl.h index 87d30ef225e..2191bd16456 100644 --- a/llvm/include/llvm/Analysis/TargetTransformInfoImpl.h +++ b/llvm/include/llvm/Analysis/TargetTransformInfoImpl.h @@ -775,7 +775,9 @@ public: } int getInstructionLatency(const Instruction *I) { - if (isa<PHINode>(I)) + SmallVector<const Value *, 4> Operands(I->value_op_begin(), + I->value_op_end()); + if (getUserCost(I, Operands) == TTI::TCC_Free) return 0; if (isa<CallInst>(I)) diff --git a/llvm/test/Analysis/CostModel/X86/costmodel.ll b/llvm/test/Analysis/CostModel/X86/costmodel.ll index 1b3d784323b..f7958580b13 100644 --- a/llvm/test/Analysis/CostModel/X86/costmodel.ll +++ b/llvm/test/Analysis/CostModel/X86/costmodel.ll @@ -3,6 +3,8 @@ ; Tests if the interface TargetTransformInfo::getInstructionCost() works correctly. +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" + define i64 @foo(i64 %arg) { ; LATENCY: cost of 1 {{.*}} %I64 = add @@ -13,6 +15,22 @@ define i64 @foo(i64 %arg) { ; CODESIZE: cost of 1 {{.*}} load load i64, i64* undef, align 4 + ; LATENCY: cost of 0 {{.*}} bitcast + ; CODESIZE: cost of 0 {{.*}} bitcast + %BC = bitcast i8* undef to i32* + + ; LATENCY: cost of 0 {{.*}} inttoptr + ; CODESIZE: cost of 0 {{.*}} inttoptr + %I2P = inttoptr i64 undef to i8* + + ; LATENCY: cost of 0 {{.*}} ptrtoint + ; CODESIZE: cost of 0 {{.*}} ptrtoint + %P2I = ptrtoint i8* undef to i64 + + ; LATENCY: cost of 0 {{.*}} trunc + ; CODESIZE: cost of 0 {{.*}} trunc + %TC = trunc i64 undef to i32 + ; LATENCY: cost of 1 {{.*}} ret ; CODESIZE: cost of 1 {{.*}} ret ret i64 undef |
