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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=ipsccp -S %s | FileCheck %s
@y = common global [1 x i32] zeroinitializer, align 4
@x = common global [1 x i32] zeroinitializer, align 4
define i32 @eq_undereferenceable(ptr %p) {
; CHECK-LABEL: @eq_undereferenceable(
; CHECK-NEXT: entry:
; CHECK-NEXT: store i32 1, ptr @y, align 4
; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P:%.*]], getelementptr inbounds (i32, ptr @x, i64 1)
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: store i32 2, ptr getelementptr inbounds (i32, ptr @x, i64 1), align 4
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr @y, align 4
; CHECK-NEXT: ret i32 [[TMP0]]
;
entry:
store i32 1, ptr @y, align 4
%cmp = icmp eq ptr %p, getelementptr inbounds (i32, ptr @x, i64 1)
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
store i32 2, ptr %p, align 4
br label %if.end
if.end: ; preds = %if.then, %entry
%0 = load i32, ptr @y, align 4
ret i32 %0
}
define i32 @eq_dereferenceable(ptr %p) {
; CHECK-LABEL: @eq_dereferenceable(
; CHECK-NEXT: entry:
; CHECK-NEXT: store i32 1, ptr @y, align 4
; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P:%.*]], @x
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: store i32 2, ptr @x, align 4
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr @y, align 4
; CHECK-NEXT: ret i32 [[TMP0]]
;
entry:
store i32 1, ptr @y, align 4
%cmp = icmp eq ptr %p, @x
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
store i32 2, ptr %p, align 4
br label %if.end
if.end: ; preds = %if.then, %entry
%0 = load i32, ptr @y, align 4
ret i32 %0
}
define i1 @eq_undereferenceable_cmp_simp(ptr %p) {
; CHECK-LABEL: @eq_undereferenceable_cmp_simp(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP_0:%.*]] = icmp eq ptr [[P:%.*]], getelementptr inbounds (i32, ptr @x, i64 1)
; CHECK-NEXT: br i1 [[CMP_0]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: store i32 2, ptr getelementptr inbounds (i32, ptr @x, i64 1), align 4
; CHECK-NEXT: ret i1 true
; CHECK: if.end:
; CHECK-NEXT: ret i1 false
;
entry:
%cmp.0 = icmp eq ptr %p, getelementptr inbounds (i32, ptr @x, i64 1)
br i1 %cmp.0, label %if.then, label %if.end
if.then: ; preds = %entry
store i32 2, ptr %p, align 4
%cmp.1 = icmp eq ptr %p, getelementptr inbounds (i32, ptr @x, i64 1)
ret i1 %cmp.1
if.end: ; preds = %if.then, %entry
%cmp.2 = icmp eq ptr %p, getelementptr inbounds (i32, ptr @x, i64 1)
ret i1 %cmp.2
}
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