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28 lines
744 B
LLVM
28 lines
744 B
LLVM
; RUN: llc -march=hexagon < %s | FileCheck %s
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; Check that we generate 'cmpb.eq' instruction for a byte comparision.
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@g0 = common global i8 0, align 1
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; Function Attrs: nounwind
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define i32 @f0(i32 %a0, i32 %a1) #0 {
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b0:
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%v0 = xor i32 %a1, %a0
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%v1 = and i32 %v0, 255
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%v2 = icmp eq i32 %v1, 0
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br i1 %v2, label %b1, label %b2
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; CHECK-NOT: xor(r{{[0-9]+}},r{{[0-9]+}})
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; CHECK-NOT: zxtb(r{{[0-9]+}})
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; CHECK: cmpb.eq(r{{[0-9]+}},r{{[0-9]+}})
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b1: ; preds = %b0
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%v3 = trunc i32 %a0 to i8
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store i8 %v3, i8* @g0, align 1
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br label %b2
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b2: ; preds = %b1, %b0
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%v4 = phi i32 [ 1, %b1 ], [ 0, %b0 ]
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ret i32 %v4
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}
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attributes #0 = { nounwind }
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