mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2025-01-31 20:51:52 +01:00
70f97370e8
This is a 2nd try of: 3c8473ba534 which was reverted at: a26312f9d4f because of crashing. This version includes extra code and tests to avoid the known crashing examples as discussed in PR49730. Original commit message: As noted in D98152, we need to patch SLP to avoid regressions when we start canonicalizing to integer min/max intrinsics. Most of the real work to make this possible was in: 7202f47508 Differential Revision: https://reviews.llvm.org/D98981
69 lines
2.5 KiB
LLVM
69 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -slp-vectorizer -S < %s | FileCheck %s
|
|
|
|
; Given LLVM IR caused associative reduction matching routine crash in SLP.
|
|
; The routines begins with select as integer Umax reduction kind
|
|
; and then follows to llvm.umax intrinsic call which also matched
|
|
; to UMax and thus same reduction kind is returned.
|
|
; The routine's later code merely assumes the instruction to be a select.
|
|
|
|
define dso_local void @test() {
|
|
; CHECK-LABEL: @test(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br i1 undef, label [[NEXT:%.*]], label [[THEN:%.*]]
|
|
; CHECK: then:
|
|
; CHECK-NEXT: [[UM:%.*]] = call i8 @llvm.umax.i8(i8 0, i8 undef)
|
|
; CHECK-NEXT: [[SELCMP:%.*]] = icmp ult i8 [[UM]], undef
|
|
; CHECK-NEXT: [[I0:%.*]] = select i1 [[SELCMP]], i8 undef, i8 [[UM]]
|
|
; CHECK-NEXT: br label [[NEXT]]
|
|
; CHECK: next:
|
|
; CHECK-NEXT: [[T7_0:%.*]] = phi i8 [ undef, [[ENTRY:%.*]] ], [ [[I0]], [[THEN]] ]
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br i1 undef, label %next, label %then
|
|
|
|
then:
|
|
%um = call i8 @llvm.umax.i8(i8 0, i8 undef)
|
|
%selcmp = icmp ult i8 %um, undef
|
|
%i0 = select i1 %selcmp, i8 undef, i8 %um
|
|
br label %next
|
|
|
|
next:
|
|
%t7.0 = phi i8 [ undef, %entry ], [ %i0, %then ]
|
|
ret void
|
|
}
|
|
|
|
declare i8 @llvm.umax.i8(i8, i8)
|
|
|
|
declare i32 @llvm.smin.i32(i32, i32)
|
|
declare i32 @llvm.umin.i32(i32, i32)
|
|
|
|
; Given LLVM IR caused crash in SLP.
|
|
define void @test2() {
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = call <4 x i32> @llvm.smin.v4i32(<4 x i32> undef, <4 x i32> <i32 3, i32 2, i32 1, i32 0>)
|
|
; CHECK-NEXT: [[TMP1:%.*]] = sub nsw <4 x i32> undef, [[TMP0]]
|
|
; CHECK-NEXT: [[TMP2:%.*]] = call i32 @llvm.vector.reduce.umin.v4i32(<4 x i32> [[TMP1]])
|
|
; CHECK-NEXT: [[TMP3:%.*]] = call i32 @llvm.umin.i32(i32 [[TMP2]], i32 77)
|
|
; CHECK-NEXT: [[E:%.*]] = icmp ugt i32 [[TMP3]], 1
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%smin0 = call i32 @llvm.smin.i32(i32 undef, i32 0)
|
|
%smin1 = call i32 @llvm.smin.i32(i32 undef, i32 1)
|
|
%smin2 = call i32 @llvm.smin.i32(i32 undef, i32 2)
|
|
%smin3 = call i32 @llvm.smin.i32(i32 undef, i32 3)
|
|
%a = sub nsw i32 undef, %smin0
|
|
%b = sub nsw i32 undef, %smin1
|
|
%c = sub nsw i32 undef, %smin2
|
|
%d = sub nsw i32 undef, %smin3
|
|
%umin0 = call i32 @llvm.umin.i32(i32 %d, i32 %c)
|
|
%umin1 = call i32 @llvm.umin.i32(i32 %umin0, i32 %b)
|
|
%umin2 = call i32 @llvm.umin.i32(i32 %umin1, i32 %a)
|
|
%umin3 = call i32 @llvm.umin.i32(i32 %umin2, i32 77)
|
|
%e = icmp ugt i32 %umin3, 1
|
|
ret void
|
|
}
|