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73e54c92b3
It might be a symbol instead. We can't fold those since we can't negate them. Similar for other SUB with immediates. Fixes PR43529. llvm-svn: 373397
40 lines
1.3 KiB
LLVM
40 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i386-unknown-linux-gnu | FileCheck %s
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define i32 @a() nounwind {
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; CHECK-LABEL: a:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: pushl %esi
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; CHECK-NEXT: subl $8, %esp
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; CHECK-NEXT: leal {{[0-9]+}}(%esp), %esi
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: subl $a, %eax
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; CHECK-NEXT: calll d
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; CHECK-NEXT: cmpl $a, %esi
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; CHECK-NEXT: jbe .LBB0_2
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; CHECK-NEXT: .p2align 4, 0x90
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; CHECK-NEXT: .LBB0_1: # %for.cond
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; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: jmp .LBB0_1
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; CHECK-NEXT: .LBB0_2: # %for.end.split
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; CHECK-NEXT: addl $8, %esp
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; CHECK-NEXT: popl %esi
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; CHECK-NEXT: retl
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entry:
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%b = alloca i32, align 4
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%0 = bitcast i32* %b to i8*
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%1 = ptrtoint i32* %b to i32
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%sub = sub nsw i32 %1, ptrtoint (i32 ()* @a to i32)
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%call = call i32 bitcast (i32 (...)* @d to i32 (i32)*)(i32 inreg %sub)
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%cmp = icmp ugt i32* %b, bitcast (i32 ()* @a to i32*)
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br i1 %cmp, label %for.cond, label %for.end.split
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for.cond: ; preds = %entry, %for.cond
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br label %for.cond
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for.end.split: ; preds = %entry
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ret i32 undef
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}
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declare i32 @d(...)
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