79dfe48865
This is so that we don't expand to include unneeded 0 checks. Also fix the logic error in LegalizerInfo so it is NOT legal on Thumb1 in Fast-ISEL. Finally, Remove the README entry regarding this issue.
42 lines
1.3 KiB
LLVM
42 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc -mtriple=arm-eabi -mattr=+v5t %s -o - | FileCheck %s -check-prefixes=CHECK,INLINE
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; RUN: llc -mtriple=arm-eabi %s -o - | FileCheck %s -check-prefixes=CHECK,LIBCALL
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declare i32 @llvm.ctlz.i32(i32, i1)
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define i32 @undef_zero(i32 %x) {
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; INLINE-LABEL: undef_zero:
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; INLINE: @ %bb.0:
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; INLINE-NEXT: clz r0, r0
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; INLINE-NEXT: bx lr
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;
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; LIBCALL-LABEL: undef_zero:
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; LIBCALL: @ %bb.0:
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; LIBCALL-NEXT: b __clzsi2
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%tmp.1 = call i32 @llvm.ctlz.i32( i32 %x, i1 true )
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ret i32 %tmp.1
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}
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define i32 @no_undef_zero(i32 %x) {
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; INLINE-LABEL: no_undef_zero:
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; INLINE: @ %bb.0:
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; INLINE-NEXT: clz r0, r0
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; INLINE-NEXT: bx lr
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;
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; LIBCALL-LABEL: no_undef_zero:
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; LIBCALL: @ %bb.0:
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; LIBCALL-NEXT: cmp r0, #0
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; LIBCALL-NEXT: moveq r0, #32
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; LIBCALL-NEXT: moveq pc, lr
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; LIBCALL-NEXT: .LBB1_1: @ %cond.false
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; LIBCALL-NEXT: .save {r11, lr}
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; LIBCALL-NEXT: push {r11, lr}
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; LIBCALL-NEXT: bl __clzsi2
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; LIBCALL-NEXT: pop {r11, lr}
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; LIBCALL-NEXT: mov pc, lr
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%tmp.1 = call i32 @llvm.ctlz.i32( i32 %x, i1 false )
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ret i32 %tmp.1
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}
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;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
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; CHECK: {{.*}}
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