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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -passes=newgvn -S < %s | FileCheck %s
@y = external global i32
@z = external global i32
; Function Attrs: nounwind ssp uwtable
define void @foo(i32 %x) {
; CHECK-LABEL: define void @foo(
; CHECK-SAME: i32 [[X:%.*]]) {
; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, ptr @y, align 4
; CHECK-NEXT: br i1 false, label [[IF_THEN:%.*]], label [[ENTRY_IF_END_CRIT_EDGE:%.*]]
; CHECK: entry.if.end_crit_edge:
; CHECK-NEXT: br label [[IF_END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: store i8 poison, ptr null, align 1
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: tail call void @bar(i32 [[DOTPRE]])
; CHECK-NEXT: ret void
;
%t = sub i32 %x, %x
%.pre = load i32, ptr @y, align 4
%cmp = icmp sgt i32 %t, 2
br i1 %cmp, label %if.then, label %entry.if.end_crit_edge
entry.if.end_crit_edge: ; preds = %entry
br label %if.end
if.then: ; preds = %entry
%add = add nsw i32 %x, 3
store i32 %add, ptr @y, align 4
br label %if.end
if.end: ; preds = %entry.if.end_crit_edge, %if.then
%1 = phi i32 [ %.pre, %entry.if.end_crit_edge ], [ %add, %if.then ]
tail call void @bar(i32 %1)
ret void
}
define void @foo2(i32 %x) {
; CHECK-LABEL: define void @foo2(
; CHECK-SAME: i32 [[X:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, ptr @y, align 4
; CHECK-NEXT: br i1 false, label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; CHECK: if.then:
; CHECK-NEXT: store i8 poison, ptr null, align 1
; CHECK-NEXT: br label [[IF_END:%.*]]
; CHECK: if.else:
; CHECK-NEXT: store i32 1, ptr @z, align 4
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: tail call void @bar(i32 [[DOTPRE]])
; CHECK-NEXT: ret void
;
entry:
%t = sub i32 %x, %x
%.pre = load i32, ptr @y, align 4
%cmp = icmp sgt i32 %t, 2
br i1 %cmp, label %if.then, label %if.else
if.then: ; preds = %entry
%add = add nsw i32 %x, 3
store i32 %add, ptr @y, align 4
br label %if.end
if.else: ; preds = %entry
store i32 1, ptr @z, align 4
br label %if.end
if.end: ; preds = %if.else, %if.then
%0 = phi i32 [ %.pre, %if.else ], [ %add, %if.then ]
tail call void @bar(i32 %0)
ret void
}
declare void @bar(i32)
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