llvm-project/llvm/test/CodeGen/ARM/invalidated-save-point.ll

28 lines
662 B
LLVM

; RUN: llc -mtriple thumbv7 -stop-after=if-converter < %s 2>&1 | FileCheck %s
; Make sure the save point and restore point are dropped from MFI at
; this point. Notably, if it isn't is will be invalid and reference a
; deleted block (%bb.-1.if.end)
; CHECK: savePoint: ''
; CHECK: restorePoint: ''
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbv7"
define i32 @f(i32 %n) {
entry:
%cmp = icmp ult i32 %n, 4
br i1 %cmp, label %return, label %if.end
if.end:
tail call void @g(i32 %n)
br label %return
return:
%retval.0 = phi i32 [ 0, %if.end ], [ -1, %entry ]
ret i32 %retval.0
}
declare void @g(i32)