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TheRock/compiler/amd-llvm/llvm/test/CodeGen/X86/merge-sp-update-lea.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

33 lines
1.2 KiB
LLVM

; RUN: llc %s -o - | FileCheck %s
target datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128"
target triple = "i386-apple-macosx10.5"
; Check that the merging of SP updates, when LEAs are involved, happen
; correctly.
; CHECK-LABEL: useLEA:
; CHECK: calll _realloc
; Make sure that the offset we get here is 8 + 16.
; We used to have 8 + 1 because we were not reading the right immediate form
; the LEA instruction.
; CHECK-NEXT: leal 24(%esp), %esp
define noalias ptr @useLEA(ptr nocapture %p, i32 %nbytes) #0 {
entry:
%cmp = icmp slt i32 %nbytes, 0
br i1 %cmp, label %cond.end.3, label %cond.false
cond.false: ; preds = %entry
%tobool = icmp ne i32 %nbytes, 0
%cond = select i1 %tobool, i32 %nbytes, i32 1
%call = tail call ptr @realloc(ptr %p, i32 %cond)
br label %cond.end.3
cond.end.3: ; preds = %entry, %cond.false
%cond4 = phi ptr [ %call, %cond.false ], [ null, %entry ]
ret ptr %cond4
}
; Function Attrs: nounwind optsize
declare noalias ptr @realloc(ptr nocapture, i32)
attributes #0 = { nounwind optsize ssp "disable-tail-calls"="false" "frame-pointer"="all" "target-features"="+lea-sp" }