forked from OSchip/llvm-project
50 lines
1.2 KiB
LLVM
50 lines
1.2 KiB
LLVM
; RUN: llc -mtriple=thumbv8.main -mcpu=cortex-m33 %s -arm-disable-cgp=false -o - | FileCheck %s
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; CHECK: overflow_add
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; CHECK: add
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; CHECK: uxth
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; CHECK: cmp
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define zeroext i16 @overflow_add(i16 zeroext %a, i16 zeroext %b) {
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%add = add i16 %a, %b
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%or = or i16 %add, 1
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%cmp = icmp ugt i16 %or, 1024
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%res = select i1 %cmp, i16 2, i16 5
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ret i16 %res
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}
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; CHECK-LABEL: overflow_sub
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; CHECK: sub
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; CHECK: uxth
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; CHECK: cmp
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define zeroext i16 @overflow_sub(i16 zeroext %a, i16 zeroext %b) {
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%add = sub i16 %a, %b
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%or = or i16 %add, 1
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%cmp = icmp ugt i16 %or, 1024
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%res = select i1 %cmp, i16 2, i16 5
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ret i16 %res
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}
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; CHECK-LABEL: overflow_mul
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; CHECK: mul
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; CHECK: uxth
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; CHECK: cmp
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define zeroext i16 @overflow_mul(i16 zeroext %a, i16 zeroext %b) {
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%add = mul i16 %a, %b
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%or = or i16 %add, 1
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%cmp = icmp ugt i16 %or, 1024
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%res = select i1 %cmp, i16 2, i16 5
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ret i16 %res
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}
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; CHECK-LABEL: overflow_shl
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; CHECK-COMMON: lsl
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; CHECK-COMMON: uxth
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; CHECK-COMMON: cmp
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define zeroext i16 @overflow_shl(i16 zeroext %a, i16 zeroext %b) {
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%add = shl i16 %a, %b
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%or = or i16 %add, 1
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%cmp = icmp ugt i16 %or, 1024
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%res = select i1 %cmp, i16 2, i16 5
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ret i16 %res
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}
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