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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals
; RUN: opt < %s -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -hoist-common-insts=true -S | FileCheck %s
define void @hoist_range(i1 %c, ptr %p) {
; CHECK-LABEL: @hoist_range(
; CHECK-NEXT: if:
; CHECK-NEXT: [[T:%.*]] = load i8, ptr [[P:%.*]], align 1, !range [[RNG0:![0-9]+]]
; CHECK-NEXT: ret void
;
if:
br i1 %c, label %then, label %else
then:
%t = load i8, ptr %p, !range !0
br label %out
else:
%e = load i8, ptr %p, !range !1
br label %out
out:
ret void
}
define void @hoist_both_noundef(i1 %c, ptr %p) {
; CHECK-LABEL: @hoist_both_noundef(
; CHECK-NEXT: if:
; CHECK-NEXT: [[T:%.*]] = load i8, ptr [[P:%.*]], align 1, !noundef !1
; CHECK-NEXT: ret void
;
if:
br i1 %c, label %then, label %else
then:
%t = load i8, ptr %p, !noundef !2
br label %out
else:
%e = load i8, ptr %p, !noundef !2
br label %out
out:
ret void
}
define void @hoist_one_noundef(i1 %c, ptr %p) {
; CHECK-LABEL: @hoist_one_noundef(
; CHECK-NEXT: if:
; CHECK-NEXT: [[T:%.*]] = load i8, ptr [[P:%.*]], align 1
; CHECK-NEXT: ret void
;
if:
br i1 %c, label %then, label %else
then:
%t = load i8, ptr %p, !noundef !2
br label %out
else:
%e = load i8, ptr %p
br label %out
out:
ret void
}
define void @hoist_dereferenceable(i1 %c, ptr %p) {
; CHECK-LABEL: @hoist_dereferenceable(
; CHECK-NEXT: if:
; CHECK-NEXT: [[T:%.*]] = load ptr, ptr [[P:%.*]], align 8, !dereferenceable !2
; CHECK-NEXT: ret void
;
if:
br i1 %c, label %then, label %else
then:
%t = load ptr, ptr %p, !dereferenceable !{i64 10}
br label %out
else:
%e = load ptr, ptr %p, !dereferenceable !{i64 20}
br label %out
out:
ret void
}
define void @hoist_dereferenceable_or_null(i1 %c, ptr %p) {
; CHECK-LABEL: @hoist_dereferenceable_or_null(
; CHECK-NEXT: if:
; CHECK-NEXT: [[T:%.*]] = load ptr, ptr [[P:%.*]], align 8, !dereferenceable_or_null !2
; CHECK-NEXT: ret void
;
if:
br i1 %c, label %then, label %else
then:
%t = load ptr, ptr %p, !dereferenceable_or_null !{i64 20}
br label %out
else:
%e = load ptr, ptr %p, !dereferenceable_or_null !{i64 10}
br label %out
out:
ret void
}
; !range violation only returns poison, and is thus safe to speculate.
define i32 @speculate_range(i1 %c, ptr dereferenceable(8) align 8 %p) {
; CHECK-LABEL: @speculate_range(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[V:%.*]] = load i32, ptr [[P:%.*]], align 4, !range [[RNG3:![0-9]+]]
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[C:%.*]], i32 [[V]], i32 0
; CHECK-NEXT: ret i32 [[SPEC_SELECT]]
;
entry:
br i1 %c, label %if, label %join
if:
%v = load i32, ptr %p, !range !{i32 0, i32 10}
br label %join
join:
%phi = phi i32 [ %v, %if ], [ 0, %entry ]
ret i32 %phi
}
; !nonnull is safe to speculate, but !noundef is not, as the latter causes
; immediate undefined behavior.
define ptr @speculate_nonnull(i1 %c, ptr dereferenceable(8) align 8 %p) {
; CHECK-LABEL: @speculate_nonnull(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[V:%.*]] = load ptr, ptr [[P:%.*]], align 8, !nonnull !1
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[C:%.*]], ptr [[V]], ptr null
; CHECK-NEXT: ret ptr [[SPEC_SELECT]]
;
entry:
br i1 %c, label %if, label %join
if:
%v = load ptr, ptr %p, !nonnull !{}, !noundef !{}
br label %join
join:
%phi = phi ptr [ %v, %if ], [ null, %entry ]
ret ptr %phi
}
; !align is safe to speculate, but !dereferenceable is not, as the latter causes
; immediate undefined behavior.
define ptr @speculate_align(i1 %c, ptr dereferenceable(8) align 8 %p) {
; CHECK-LABEL: @speculate_align(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[V:%.*]] = load ptr, ptr [[P:%.*]], align 8, !align !4
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[C:%.*]], ptr [[V]], ptr null
; CHECK-NEXT: ret ptr [[SPEC_SELECT]]
;
entry:
br i1 %c, label %if, label %join
if:
%v = load ptr, ptr %p, !align !{i64 4}, !dereferenceable !{i64 4}
br label %join
join:
%phi = phi ptr [ %v, %if ], [ null, %entry ]
ret ptr %phi
}
define void @hoist_fpmath(i1 %c, double %x) {
; CHECK-LABEL: @hoist_fpmath(
; CHECK-NEXT: if:
; CHECK-NEXT: [[T:%.*]] = fadd double [[X:%.*]], 1.000000e+00, !fpmath !5
; CHECK-NEXT: ret void
;
if:
br i1 %c, label %then, label %else
then:
%t = fadd double %x, 1.0, !fpmath !{ float 2.5 }
br label %out
else:
%e = fadd double %x, 1.0, !fpmath !{ float 5.0 }
br label %out
out:
ret void
}
!0 = !{ i8 0, i8 1 }
!1 = !{ i8 3, i8 5 }
!2 = !{}
;.
; CHECK: [[RNG0]] = !{i8 0, i8 1, i8 3, i8 5}
; CHECK: [[META1:![0-9]+]] = !{}
; CHECK: [[META2:![0-9]+]] = !{i64 10}
; CHECK: [[RNG3]] = !{i32 0, i32 10}
; CHECK: [[META4:![0-9]+]] = !{i64 4}
; CHECK: [[META5:![0-9]+]] = !{float 2.500000e+00}
;.
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