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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S < %s | FileCheck %s
define noundef i32 @test_ret_noundef(i1 %cond) {
; CHECK-LABEL: @test_ret_noundef(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i32 1
;
entry:
br i1 %cond, label %bb1, label %bb2
bb1:
br label %bb2
bb2:
%r = phi i32 [ undef, %entry ], [ 1, %bb1 ]
ret i32 %r
}
define i32 @test_ret(i1 %cond) {
; CHECK-LABEL: @test_ret(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[COND:%.*]], i32 1, i32 undef
; CHECK-NEXT: ret i32 [[SPEC_SELECT]]
;
entry:
br i1 %cond, label %bb1, label %bb2
bb1:
br label %bb2
bb2:
%r = phi i32 [ undef, %entry ], [ 1, %bb1 ]
ret i32 %r
}
define nonnull noundef ptr @test_ret_ptr_nonnull_noundef(i1 %cond, ptr %x) {
; CHECK-LABEL: @test_ret_ptr_nonnull_noundef(
; CHECK-NEXT: entry:
; CHECK-NEXT: call void @llvm.assume(i1 [[COND:%.*]])
; CHECK-NEXT: ret ptr [[X:%.*]]
;
entry:
br i1 %cond, label %bb1, label %bb2
bb1:
br label %bb2
bb2:
%r = phi ptr [ null, %entry ], [ %x, %bb1 ]
ret ptr %r
}
define nonnull noundef ptr @test_ret_ptr_nonnull_noundef_gep_nonzero(i1 %cond, ptr %x) {
; CHECK-LABEL: @test_ret_ptr_nonnull_noundef_gep_nonzero(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[COND:%.*]], ptr [[X:%.*]], ptr null
; CHECK-NEXT: [[GEP:%.*]] = getelementptr ptr, ptr [[SPEC_SELECT]], i64 12
; CHECK-NEXT: ret ptr [[GEP]]
;
entry:
br i1 %cond, label %bb1, label %bb2
bb1:
br label %bb2
bb2:
%phi = phi ptr [ null, %entry ], [ %x, %bb1 ]
%gep = getelementptr ptr, ptr %phi, i64 12
ret ptr %gep
}
define nonnull noundef ptr @test_ret_ptr_nonnull_noundef_gep_inbounds_nonzero(i1 %cond, ptr %x) {
; CHECK-LABEL: @test_ret_ptr_nonnull_noundef_gep_inbounds_nonzero(
; CHECK-NEXT: entry:
; CHECK-NEXT: call void @llvm.assume(i1 [[COND:%.*]])
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds ptr, ptr [[X:%.*]], i64 12
; CHECK-NEXT: ret ptr [[GEP]]
;
entry:
br i1 %cond, label %bb1, label %bb2
bb1:
br label %bb2
bb2:
%phi = phi ptr [ null, %entry ], [ %x, %bb1 ]
%gep = getelementptr inbounds ptr, ptr %phi, i64 12
ret ptr %gep
}
define nonnull ptr @test_ret_ptr_nonnull(i1 %cond, ptr %x) {
; CHECK-LABEL: @test_ret_ptr_nonnull(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[COND:%.*]], ptr [[X:%.*]], ptr null
; CHECK-NEXT: ret ptr [[SPEC_SELECT]]
;
entry:
br i1 %cond, label %bb1, label %bb2
bb1:
br label %bb2
bb2:
%r = phi ptr [ null, %entry ], [ %x, %bb1 ]
ret ptr %r
}
define noundef ptr @test_ret_ptr_noundef(i1 %cond, ptr %x) {
; CHECK-LABEL: @test_ret_ptr_noundef(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[COND:%.*]], ptr [[X:%.*]], ptr null
; CHECK-NEXT: ret ptr [[SPEC_SELECT]]
;
entry:
br i1 %cond, label %bb1, label %bb2
bb1:
br label %bb2
bb2:
%r = phi ptr [ null, %entry ], [ %x, %bb1 ]
ret ptr %r
}
define ptr @test_ret_ptr(i1 %cond, ptr %x) {
; CHECK-LABEL: @test_ret_ptr(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[COND:%.*]], ptr [[X:%.*]], ptr null
; CHECK-NEXT: ret ptr [[SPEC_SELECT]]
;
entry:
br i1 %cond, label %bb1, label %bb2
bb1:
br label %bb2
bb2:
%r = phi ptr [ null, %entry ], [ %x, %bb1 ]
ret ptr %r
}
|
