diff options
| -rw-r--r-- | lib/CodeGen/BasicTargetTransformInfo.cpp | 3 | ||||
| -rw-r--r-- | test/Analysis/CostModel/PowerPC/ext.ll | 21 |
2 files changed, 23 insertions, 1 deletions
diff --git a/lib/CodeGen/BasicTargetTransformInfo.cpp b/lib/CodeGen/BasicTargetTransformInfo.cpp index 03c5eba369..25486cf391 100644 --- a/lib/CodeGen/BasicTargetTransformInfo.cpp +++ b/lib/CodeGen/BasicTargetTransformInfo.cpp @@ -297,7 +297,8 @@ unsigned BasicTTI::getCastInstrCost(unsigned Opcode, Type *Dst, return 0; // If the cast is marked as legal (or promote) then assume low cost. - if (TLI->isOperationLegalOrPromote(ISD, DstLT.second)) + if (SrcLT.first == DstLT.first && + TLI->isOperationLegalOrPromote(ISD, DstLT.second)) return 1; // Handle scalar conversions. diff --git a/test/Analysis/CostModel/PowerPC/ext.ll b/test/Analysis/CostModel/PowerPC/ext.ll new file mode 100644 index 0000000000..daaa8f5bac --- /dev/null +++ b/test/Analysis/CostModel/PowerPC/ext.ll @@ -0,0 +1,21 @@ +; RUN: opt < %s -cost-model -analyze -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -mattr=+vsx | FileCheck %s +target datalayout = "E-m:e-i64:64-n32:64" +target triple = "powerpc64-unknown-linux-gnu" + +define void @exts() { + + ; CHECK: cost of 1 {{.*}} sext + %v1 = sext i16 undef to i32 + + ; CHECK: cost of 1 {{.*}} sext + %v2 = sext <2 x i16> undef to <2 x i32> + + ; CHECK: cost of 1 {{.*}} sext + %v3 = sext <4 x i16> undef to <4 x i32> + + ; CHECK: cost of 216 {{.*}} sext + %v4 = sext <8 x i16> undef to <8 x i32> + + ret void +} + |