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27 lines
697 B
LLVM
27 lines
697 B
LLVM
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; RUN: llc -mtriple=arm--none-eabi -mcpu=cortex-a8 %s -o - | FileCheck %s
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; RUN: llc -mtriple=thumb--none-eabi -mcpu=cortex-a8 %s -o - | FileCheck %s
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; We cannot codegen the smulw[bt] or smlaw[bt] instructions for these functions,
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; as the top 16 bits of the result would differ
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define i32 @f1(i32 %a, i16 %b) {
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; CHECK-LABEL: f1:
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; CHECK: mul
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; CHECK: asr
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%tmp1 = sext i16 %b to i32
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%tmp2 = mul i32 %a, %tmp1
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%tmp3 = ashr i32 %tmp2, 16
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ret i32 %tmp3
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}
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define i32 @f2(i32 %a, i16 %b, i32 %c) {
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; CHECK-LABEL: f2:
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; CHECK: mul
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; CHECK: add{{.*}}, asr #16
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%tmp1 = sext i16 %b to i32
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%tmp2 = mul i32 %a, %tmp1
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%tmp3 = ashr i32 %tmp2, 16
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%tmp4 = add i32 %tmp3, %c
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ret i32 %tmp4
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}
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