xref: /aosp_15_r20/external/llvm/test/CodeGen/X86/merge-sp-update-lea.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: llc %s -o - | FileCheck %s
2*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128"
3*9880d681SAndroid Build Coastguard Workertarget triple = "i386-apple-macosx10.5"
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Worker; Check that the merging of SP updates, when LEAs are involved, happen
6*9880d681SAndroid Build Coastguard Worker; correctly.
7*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: useLEA:
8*9880d681SAndroid Build Coastguard Worker; CHECK: calll _realloc
9*9880d681SAndroid Build Coastguard Worker; Make sure that the offset we get here is 8 + 16.
10*9880d681SAndroid Build Coastguard Worker; We used to have 8 + 1 because we were not reading the right immediate form
11*9880d681SAndroid Build Coastguard Worker; the LEA instruction.
12*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: leal 24(%esp), %esp
13*9880d681SAndroid Build Coastguard Workerdefine noalias i8* @useLEA(i8* nocapture %p, i32 %nbytes) #0 {
14*9880d681SAndroid Build Coastguard Workerentry:
15*9880d681SAndroid Build Coastguard Worker  %cmp = icmp slt i32 %nbytes, 0
16*9880d681SAndroid Build Coastguard Worker  br i1 %cmp, label %cond.end.3, label %cond.false
17*9880d681SAndroid Build Coastguard Worker
18*9880d681SAndroid Build Coastguard Workercond.false:                                       ; preds = %entry
19*9880d681SAndroid Build Coastguard Worker  %tobool = icmp ne i32 %nbytes, 0
20*9880d681SAndroid Build Coastguard Worker  %cond = select i1 %tobool, i32 %nbytes, i32 1
21*9880d681SAndroid Build Coastguard Worker  %call = tail call i8* @realloc(i8* %p, i32 %cond)
22*9880d681SAndroid Build Coastguard Worker  br label %cond.end.3
23*9880d681SAndroid Build Coastguard Worker
24*9880d681SAndroid Build Coastguard Workercond.end.3:                                       ; preds = %entry, %cond.false
25*9880d681SAndroid Build Coastguard Worker  %cond4 = phi i8* [ %call, %cond.false ], [ null, %entry ]
26*9880d681SAndroid Build Coastguard Worker  ret i8* %cond4
27*9880d681SAndroid Build Coastguard Worker}
28*9880d681SAndroid Build Coastguard Worker
29*9880d681SAndroid Build Coastguard Worker; Function Attrs: nounwind optsize
30*9880d681SAndroid Build Coastguard Workerdeclare noalias i8* @realloc(i8* nocapture, i32)
31*9880d681SAndroid Build Coastguard Worker
32*9880d681SAndroid Build Coastguard Workerattributes #0 = { nounwind optsize ssp "disable-tail-calls"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "target-features"="+lea-sp" }
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