084ca632ac
There is no need to combine metadata if we're performing store to load forwarding. In that case we would end up combining metadata on an unrelated load instruction.
105 lines
3.4 KiB
LLVM
105 lines
3.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -passes=early-cse -earlycse-debug-hash -S < %s | FileCheck %s
|
|
; RUN: opt -passes='early-cse<memssa>' -S < %s | FileCheck %s
|
|
|
|
declare void @use(i1)
|
|
declare void @use.ptr(ptr) memory(read)
|
|
|
|
define void @test1(float %x, float %y) {
|
|
; CHECK-LABEL: @test1(
|
|
; CHECK-NEXT: [[CMP1:%.*]] = fcmp oeq float [[Y:%.*]], [[X:%.*]]
|
|
; CHECK-NEXT: call void @use(i1 [[CMP1]])
|
|
; CHECK-NEXT: call void @use(i1 [[CMP1]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
%cmp1 = fcmp nnan oeq float %y, %x
|
|
%cmp2 = fcmp oeq float %x, %y
|
|
call void @use(i1 %cmp1)
|
|
call void @use(i1 %cmp2)
|
|
ret void
|
|
}
|
|
|
|
declare void @use.i8(ptr)
|
|
|
|
define void @test_inbounds_program_ub_if_first_gep_poison(ptr %ptr, i64 %n) {
|
|
; CHECK-LABEL: @test_inbounds_program_ub_if_first_gep_poison(
|
|
; CHECK-NEXT: [[ADD_PTR_1:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[N:%.*]]
|
|
; CHECK-NEXT: call void @use.i8(ptr noundef [[ADD_PTR_1]])
|
|
; CHECK-NEXT: call void @use.i8(ptr [[ADD_PTR_1]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
%add.ptr.1 = getelementptr inbounds i8, ptr %ptr, i64 %n
|
|
call void @use.i8(ptr noundef %add.ptr.1)
|
|
%add.ptr.2 = getelementptr i8, ptr %ptr, i64 %n
|
|
call void @use.i8(ptr %add.ptr.2)
|
|
ret void
|
|
}
|
|
|
|
define void @test_inbounds_program_not_ub_if_first_gep_poison(ptr %ptr, i64 %n) {
|
|
; CHECK-LABEL: @test_inbounds_program_not_ub_if_first_gep_poison(
|
|
; CHECK-NEXT: [[ADD_PTR_1:%.*]] = getelementptr i8, ptr [[PTR:%.*]], i64 [[N:%.*]]
|
|
; CHECK-NEXT: call void @use.i8(ptr [[ADD_PTR_1]])
|
|
; CHECK-NEXT: call void @use.i8(ptr [[ADD_PTR_1]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
%add.ptr.1 = getelementptr inbounds i8, ptr %ptr, i64 %n
|
|
call void @use.i8(ptr %add.ptr.1)
|
|
%add.ptr.2 = getelementptr i8, ptr %ptr, i64 %n
|
|
call void @use.i8(ptr %add.ptr.2)
|
|
ret void
|
|
}
|
|
|
|
define void @load_both_nonnull(ptr %p) {
|
|
; CHECK-LABEL: @load_both_nonnull(
|
|
; CHECK-NEXT: [[V1:%.*]] = load ptr, ptr [[P:%.*]], align 8, !nonnull !0
|
|
; CHECK-NEXT: call void @use.ptr(ptr [[V1]])
|
|
; CHECK-NEXT: call void @use.ptr(ptr [[V1]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
%v1 = load ptr, ptr %p, !nonnull !{}
|
|
call void @use.ptr(ptr %v1)
|
|
%v2 = load ptr, ptr %p, !nonnull !{}
|
|
call void @use.ptr(ptr %v2)
|
|
ret void
|
|
}
|
|
|
|
define void @load_first_nonnull(ptr %p) {
|
|
; CHECK-LABEL: @load_first_nonnull(
|
|
; CHECK-NEXT: [[V1:%.*]] = load ptr, ptr [[P:%.*]], align 8
|
|
; CHECK-NEXT: call void @use.ptr(ptr [[V1]])
|
|
; CHECK-NEXT: call void @use.ptr(ptr [[V1]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
%v1 = load ptr, ptr %p, !nonnull !{}
|
|
call void @use.ptr(ptr %v1)
|
|
%v2 = load ptr, ptr %p
|
|
call void @use.ptr(ptr %v2)
|
|
ret void
|
|
}
|
|
|
|
define void @load_first_nonnull_noundef(ptr %p) {
|
|
; CHECK-LABEL: @load_first_nonnull_noundef(
|
|
; CHECK-NEXT: [[V1:%.*]] = load ptr, ptr [[P:%.*]], align 8, !nonnull !0, !noundef !0
|
|
; CHECK-NEXT: call void @use.ptr(ptr [[V1]])
|
|
; CHECK-NEXT: call void @use.ptr(ptr [[V1]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
%v1 = load ptr, ptr %p, !nonnull !{}, !noundef !{}
|
|
call void @use.ptr(ptr %v1)
|
|
%v2 = load ptr, ptr %p
|
|
call void @use.ptr(ptr %v2)
|
|
ret void
|
|
}
|
|
|
|
define ptr @store_to_load_forward(ptr %p, ptr %p2) {
|
|
; CHECK-LABEL: @store_to_load_forward(
|
|
; CHECK-NEXT: [[P3:%.*]] = load ptr, ptr [[P:%.*]], align 8, !nonnull !0
|
|
; CHECK-NEXT: store ptr [[P3]], ptr [[P2:%.*]], align 8
|
|
; CHECK-NEXT: ret ptr [[P3]]
|
|
;
|
|
%p3 = load ptr, ptr %p, !nonnull !{}
|
|
store ptr %p3, ptr %p2
|
|
%res = load ptr, ptr %p2
|
|
ret ptr %res
|
|
}
|