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32 lines
608 B
32 lines
608 B
4 months ago
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; RUN: llc -mtriple=arm-eabi -mattr=+v6 %s -o - | FileCheck %s
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define i32 @test0(i8 %A) {
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; CHECK: test0
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; CHECK: sxtb r0, r0
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%B = sext i8 %A to i32
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ret i32 %B
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}
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define signext i8 @test1(i32 %A) {
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; CHECK: test1
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; CHECK: lsr r0, r0, #8
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; CHECK: sxtb r0, r0
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%B = lshr i32 %A, 8
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%C = shl i32 %A, 24
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%D = or i32 %B, %C
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%E = trunc i32 %D to i8
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ret i8 %E
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}
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define signext i32 @test2(i32 %A, i32 %X) {
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; CHECK: test2
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; CHECK: sxtab r0, r1, r0
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%B = lshr i32 %A, 8
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%C = shl i32 %A, 24
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%D = or i32 %B, %C
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%E = trunc i32 %D to i8
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%F = sext i8 %E to i32
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%G = add i32 %F, %X
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ret i32 %G
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}
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