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907a32660b
Enable multiple COPY hints to eliminate more COPYs during register allocation. Note that this is something all targets should do, see https://reviews.llvm.org/D38128. Review: Eli Friedman llvm-svn: 325327
40 lines
1008 B
LLVM
40 lines
1008 B
LLVM
; RUN: llc -mtriple=thumb-eabi -mcpu=arm1156t2-s -mattr=+thumb2 %s -o - | FileCheck %s
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define i32 @t1(i32 %a, i32 %b, i32 %c) nounwind {
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; CHECK: t1
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; CHECK: mov r0, r1
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; CHECK: mvn r1, #-2147483648
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; CHECK: cmp r2, #10
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; CHECK: it le
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; CHECK: addle r0, r1
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%tmp1 = icmp sgt i32 %c, 10
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%tmp2 = select i1 %tmp1, i32 0, i32 2147483647
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%tmp3 = add i32 %tmp2, %b
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ret i32 %tmp3
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}
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define i32 @t2(i32 %a, i32 %b, i32 %c) nounwind {
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; CHECK: t2
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; CHECK: mov r0, r1
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; CHECK: cmp r2, #10
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; CHECK: it le
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; CHECK: addle.w r0, r0, #-2147483648
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%tmp1 = icmp sgt i32 %c, 10
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%tmp2 = select i1 %tmp1, i32 0, i32 2147483648
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%tmp3 = add i32 %tmp2, %b
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ret i32 %tmp3
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}
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define i32 @t3(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
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; CHECK: t3
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; CHECK: mov r0, r1
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; CHECK: cmp r2, #10
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; CHECK: it le
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; CHECK: suble r0, #10
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%tmp1 = icmp sgt i32 %c, 10
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%tmp2 = select i1 %tmp1, i32 0, i32 10
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%tmp3 = sub i32 %b, %tmp2
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ret i32 %tmp3
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}
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