diff options
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp | 4 | ||||
| -rw-r--r-- | llvm/test/Analysis/CostModel/PowerPC/load_store.ll | 2 | ||||
| -rw-r--r-- | llvm/test/Analysis/CostModel/PowerPC/unaligned_ld_st.ll | 26 |
3 files changed, 31 insertions, 1 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp b/llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp index f94d1eab097..2f1bceaa481 100644 --- a/llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp +++ b/llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp @@ -401,6 +401,10 @@ int PPCTTIImpl::getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment, if (IsVSXType || (ST->hasVSX() && IsAltivecType)) return Cost; + // Newer PPC supports unaligned memory access. + if (TLI->allowsMisalignedMemoryAccesses(LT.second, 0)) + return Cost; + // PPC in general does not support unaligned loads and stores. They'll need // to be decomposed based on the alignment factor. diff --git a/llvm/test/Analysis/CostModel/PowerPC/load_store.ll b/llvm/test/Analysis/CostModel/PowerPC/load_store.ll index d48be5b5f62..b77dd444774 100644 --- a/llvm/test/Analysis/CostModel/PowerPC/load_store.ll +++ b/llvm/test/Analysis/CostModel/PowerPC/load_store.ll @@ -1,4 +1,4 @@ -; RUN: opt < %s -cost-model -analyze -mtriple=powerpc64-unknown-linux-gnu -mcpu=g5 | FileCheck %s +; RUN: opt < %s -cost-model -analyze -mtriple=powerpc64-unknown-linux-gnu -mcpu=g5 -disable-ppc-unaligned | FileCheck %s 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-f128:128:128-v128:128:128-n32:64" target triple = "powerpc64-unknown-linux-gnu" diff --git a/llvm/test/Analysis/CostModel/PowerPC/unaligned_ld_st.ll b/llvm/test/Analysis/CostModel/PowerPC/unaligned_ld_st.ll new file mode 100644 index 00000000000..6addf25949e --- /dev/null +++ b/llvm/test/Analysis/CostModel/PowerPC/unaligned_ld_st.ll @@ -0,0 +1,26 @@ +; RUN: opt < %s -cost-model -analyze -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr8 -mattr=+vsx | FileCheck %s +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-f128:128:128-v128:128:128-n32:64" +target triple = "powerpc64-unknown-linux-gnu" + +define i32 @test(i32 %arg) { + + ; CHECK: cost of 1 {{.*}} load + load i8, i8* undef, align 1 + ; CHECK: cost of 1 {{.*}} load + load i16, i16* undef, align 1 + ; CHECK: cost of 1 {{.*}} load + load i32, i32* undef, align 1 + ; CHECK: cost of 1 {{.*}} load + load i64, i64* undef, align 1 + + ; CHECK: cost of 1 {{.*}} store + store i8 undef, i8* undef, align 1 + ; CHECK: cost of 1 {{.*}} store + store i16 undef, i16* undef, align 1 + ; CHECK: cost of 1 {{.*}} store + store i32 undef, i32* undef, align 1 + ; CHECK: cost of 1 {{.*}} store + store i64 undef, i64* undef, align 1 + + ret i32 undef +} |
