forked from OSchip/llvm-project
32 lines
1.1 KiB
LLVM
32 lines
1.1 KiB
LLVM
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; Expect the constant propagation to evaluate signed and unsigned bit extract.
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; RUN: llc -march=hexagon -O2 < %s | FileCheck %s
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target triple = "hexagon"
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@x = common global i32 0, align 4
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@y = common global i32 0, align 4
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define void @foo() #0 {
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entry:
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; extractu(0x000ABCD0, 16, 4)
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; should evaluate to 0xABCD (dec 43981)
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%0 = call i32 @llvm.hexagon.S2.extractu(i32 703696, i32 16, i32 4)
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; CHECK: 43981
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; CHECK-NOT: extractu
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store i32 %0, i32* @x, align 4
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; extract(0x000ABCD0, 16, 4)
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; should evaluate to 0xFFFFABCD (dec 4294945741 or -21555)
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%1 = call i32 @llvm.hexagon.S4.extract(i32 703696, i32 16, i32 4)
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; CHECK: -21555
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; CHECK-NOT: extract
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store i32 %1, i32* @y, align 4
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ret void
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}
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declare i32 @llvm.hexagon.S2.extractu(i32, i32, i32) #1
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declare i32 @llvm.hexagon.S4.extract(i32, i32, i32) #1
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attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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