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https://github.com/RPCS3/llvm-mirror.git
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f2327f04db
This is the original integer variant requested in: https://bugs.llvm.org/show_bug.cgi?id=35607 As noted in the TODO and several similar TODOs around this block, we could do this in instsimplify, but then it would cost more because we would be trying to match min/max via ValueTracking in 2 different places. There are 4 commuted variants for each of smin/smax/umin/umax that are not matched here. There are also icmp predicate variants that are not included in the affected test file because they are already handled by instsimplify by folding the final icmp to true/false. https://rise4fun.com/Alive/3KVc Name: smax(smax, smin) %c1 = icmp slt i32 %x, %y %c2 = icmp slt i32 %y, %x %min = select i1 %c1, i32 %x, i32 %y %max = select i1 %c2, i32 %x, i32 %y %c3 = icmp sgt i32 %max, %min %r = select i1 %c3, i32 %max, i32 %min => %r = %max Name: smin(smax, smin) %c1 = icmp slt i32 %x, %y %c2 = icmp slt i32 %y, %x %min = select i1 %c1, i32 %x, i32 %y %max = select i1 %c2, i32 %x, i32 %y %c3 = icmp sgt i32 %max, %min %r = select i1 %c3, i32 %min, i32 %max => %r = %min Name: umax(umax, umin) %c1 = icmp ult i32 %x, %y %c2 = icmp ult i32 %y, %x %min = select i1 %c1, i32 %x, i32 %y %max = select i1 %c2, i32 %x, i32 %y %c3 = icmp ult i32 %min, %max %r = select i1 %c3, i32 %max, i32 %min => %r = %max Name: umin(umax, umin) %c1 = icmp ult i32 %x, %y %c2 = icmp ult i32 %y, %x %min = select i1 %c1, i32 %x, i32 %y %max = select i1 %c2, i32 %x, i32 %y %c3 = icmp ult i32 %min, %max %r = select i1 %c3, i32 %min, i32 %max => %r = %min llvm-svn: 369386
327 lines
12 KiB
LLVM
327 lines
12 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -instcombine < %s | FileCheck %s
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define i32 @smax_of_smax_smin_commute0(i32 %x, i32 %y) {
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; CHECK-LABEL: @smax_of_smax_smin_commute0(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: ret i32 [[MAX]]
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;
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%cmp1 = icmp slt i32 %x, %y
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%min = select i1 %cmp1, i32 %x, i32 %y
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%cmp2 = icmp slt i32 %y, %x
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%max = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp sgt i32 %max, %min
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%r = select i1 %cmp3, i32 %max, i32 %min
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ret i32 %r
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}
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define i32 @smax_of_smax_smin_commute1(i32 %x, i32 %y) {
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; CHECK-LABEL: @smax_of_smax_smin_commute1(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: ret i32 [[MAX]]
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;
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%cmp1 = icmp sgt i32 %x, %y
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%min = select i1 %cmp1, i32 %y, i32 %x
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%cmp2 = icmp sgt i32 %x, %y
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%max = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp sgt i32 %max, %min
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%r = select i1 %cmp3, i32 %max, i32 %min
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ret i32 %r
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}
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define i32 @smax_of_smax_smin_commute2(i32 %x, i32 %y) {
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; CHECK-LABEL: @smax_of_smax_smin_commute2(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: ret i32 [[MAX]]
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;
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%cmp1 = icmp slt i32 %x, %y
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%min = select i1 %cmp1, i32 %x, i32 %y
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%cmp2 = icmp slt i32 %y, %x
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%max = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp slt i32 %min, %max
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%r = select i1 %cmp3, i32 %max, i32 %min
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ret i32 %r
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}
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define <2 x i32> @smax_of_smax_smin_commute3(<2 x i32> %x, <2 x i32> %y) {
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; CHECK-LABEL: @smax_of_smax_smin_commute3(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt <2 x i32> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP2]], <2 x i32> [[X]], <2 x i32> [[Y]]
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; CHECK-NEXT: ret <2 x i32> [[MAX]]
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;
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%cmp1 = icmp sgt <2 x i32> %x, %y
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%min = select <2 x i1> %cmp1, <2 x i32> %y, <2 x i32> %x
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%cmp2 = icmp sgt <2 x i32> %x, %y
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%max = select <2 x i1> %cmp2, <2 x i32> %x, <2 x i32> %y
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%cmp3 = icmp slt <2 x i32> %min, %max
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%r = select <2 x i1> %cmp3, <2 x i32> %max, <2 x i32> %min
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ret <2 x i32> %r
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}
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define i32 @smin_of_smin_smax_commute0(i32 %x, i32 %y) {
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; CHECK-LABEL: @smin_of_smin_smax_commute0(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: ret i32 [[MIN]]
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;
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%cmp1 = icmp sgt i32 %x, %y
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%max = select i1 %cmp1, i32 %x, i32 %y
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%cmp2 = icmp sgt i32 %y, %x
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%min = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp sgt i32 %max, %min
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%r = select i1 %cmp3, i32 %min, i32 %max
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ret i32 %r
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}
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define i32 @smin_of_smin_smax_commute1(i32 %x, i32 %y) {
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; CHECK-LABEL: @smin_of_smin_smax_commute1(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: ret i32 [[MIN]]
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;
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%cmp1 = icmp slt i32 %x, %y
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%max = select i1 %cmp1, i32 %y, i32 %x
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%cmp2 = icmp slt i32 %x, %y
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%min = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp sgt i32 %max, %min
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%r = select i1 %cmp3, i32 %min, i32 %max
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ret i32 %r
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}
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define <2 x i32> @smin_of_smin_smax_commute2(<2 x i32> %x, <2 x i32> %y) {
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; CHECK-LABEL: @smin_of_smin_smax_commute2(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp slt <2 x i32> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP2]], <2 x i32> [[X]], <2 x i32> [[Y]]
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; CHECK-NEXT: ret <2 x i32> [[MIN]]
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;
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%cmp1 = icmp sgt <2 x i32> %x, %y
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%max = select <2 x i1> %cmp1, <2 x i32> %x, <2 x i32> %y
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%cmp2 = icmp slt <2 x i32> %x, %y
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%min = select <2 x i1> %cmp2, <2 x i32> %x, <2 x i32> %y
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%cmp3 = icmp slt <2 x i32> %min, %max
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%r = select <2 x i1> %cmp3, <2 x i32> %min, <2 x i32> %max
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ret <2 x i32> %r
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}
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define i32 @smin_of_smin_smax_commute3(i32 %x, i32 %y) {
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; CHECK-LABEL: @smin_of_smin_smax_commute3(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: ret i32 [[MIN]]
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;
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%cmp1 = icmp slt i32 %x, %y
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%max = select i1 %cmp1, i32 %y, i32 %x
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%cmp2 = icmp sgt i32 %y, %x
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%min = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp slt i32 %min, %max
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%r = select i1 %cmp3, i32 %min, i32 %max
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ret i32 %r
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}
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define i32 @umax_of_umax_umin_commute0(i32 %x, i32 %y) {
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; CHECK-LABEL: @umax_of_umax_umin_commute0(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: ret i32 [[MAX]]
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;
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%cmp1 = icmp ult i32 %x, %y
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%min = select i1 %cmp1, i32 %x, i32 %y
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%cmp2 = icmp ult i32 %y, %x
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%max = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp ugt i32 %max, %min
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%r = select i1 %cmp3, i32 %max, i32 %min
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ret i32 %r
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}
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define i32 @umax_of_umax_umin_commute1(i32 %x, i32 %y) {
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; CHECK-LABEL: @umax_of_umax_umin_commute1(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: ret i32 [[MAX]]
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;
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%cmp1 = icmp ugt i32 %x, %y
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%min = select i1 %cmp1, i32 %y, i32 %x
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%cmp2 = icmp ugt i32 %x, %y
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%max = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp ugt i32 %max, %min
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%r = select i1 %cmp3, i32 %max, i32 %min
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ret i32 %r
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}
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define i32 @umax_of_umax_umin_commute2(i32 %x, i32 %y) {
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; CHECK-LABEL: @umax_of_umax_umin_commute2(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: ret i32 [[MAX]]
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;
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%cmp1 = icmp ult i32 %x, %y
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%min = select i1 %cmp1, i32 %x, i32 %y
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%cmp2 = icmp ult i32 %y, %x
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%max = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp ult i32 %min, %max
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%r = select i1 %cmp3, i32 %max, i32 %min
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ret i32 %r
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}
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define <2 x i32> @umax_of_umax_umin_commute3(<2 x i32> %x, <2 x i32> %y) {
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; CHECK-LABEL: @umax_of_umax_umin_commute3(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt <2 x i32> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP2]], <2 x i32> [[X]], <2 x i32> [[Y]]
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; CHECK-NEXT: ret <2 x i32> [[MAX]]
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;
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%cmp1 = icmp ugt <2 x i32> %x, %y
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%min = select <2 x i1> %cmp1, <2 x i32> %y, <2 x i32> %x
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%cmp2 = icmp ugt <2 x i32> %x, %y
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%max = select <2 x i1> %cmp2, <2 x i32> %x, <2 x i32> %y
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%cmp3 = icmp ult <2 x i32> %min, %max
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%r = select <2 x i1> %cmp3, <2 x i32> %max, <2 x i32> %min
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ret <2 x i32> %r
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}
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define i32 @umin_of_umin_umax_commute0(i32 %x, i32 %y) {
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; CHECK-LABEL: @umin_of_umin_umax_commute0(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: ret i32 [[MIN]]
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;
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%cmp1 = icmp ugt i32 %x, %y
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%max = select i1 %cmp1, i32 %x, i32 %y
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%cmp2 = icmp ugt i32 %y, %x
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%min = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp ugt i32 %max, %min
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%r = select i1 %cmp3, i32 %min, i32 %max
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ret i32 %r
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}
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define i32 @umin_of_umin_umax_commute1(i32 %x, i32 %y) {
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; CHECK-LABEL: @umin_of_umin_umax_commute1(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: ret i32 [[MIN]]
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;
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%cmp1 = icmp ult i32 %x, %y
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%max = select i1 %cmp1, i32 %y, i32 %x
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%cmp2 = icmp ult i32 %x, %y
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%min = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp ugt i32 %max, %min
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%r = select i1 %cmp3, i32 %min, i32 %max
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ret i32 %r
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}
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define <2 x i32> @umin_of_umin_umax_commute2(<2 x i32> %x, <2 x i32> %y) {
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; CHECK-LABEL: @umin_of_umin_umax_commute2(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp ult <2 x i32> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP2]], <2 x i32> [[X]], <2 x i32> [[Y]]
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; CHECK-NEXT: ret <2 x i32> [[MIN]]
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;
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%cmp1 = icmp ugt <2 x i32> %x, %y
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%max = select <2 x i1> %cmp1, <2 x i32> %x, <2 x i32> %y
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%cmp2 = icmp ult <2 x i32> %x, %y
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%min = select <2 x i1> %cmp2, <2 x i32> %x, <2 x i32> %y
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%cmp3 = icmp ult <2 x i32> %min, %max
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%r = select <2 x i1> %cmp3, <2 x i32> %min, <2 x i32> %max
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ret <2 x i32> %r
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}
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define i32 @umin_of_umin_umax_commute3(i32 %x, i32 %y) {
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; CHECK-LABEL: @umin_of_umin_umax_commute3(
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; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: ret i32 [[MIN]]
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;
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%cmp1 = icmp ult i32 %x, %y
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%max = select i1 %cmp1, i32 %y, i32 %x
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%cmp2 = icmp ugt i32 %y, %x
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%min = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp ult i32 %min, %max
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%r = select i1 %cmp3, i32 %min, i32 %max
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ret i32 %r
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}
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; Negative test - mismatch of min/max flavor
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define i32 @umin_of_smin_umax_wrong_pattern(i32 %x, i32 %y) {
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; CHECK-LABEL: @umin_of_smin_umax_wrong_pattern(
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP1]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[Y]], [[X]]
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; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: [[CMP3:%.*]] = icmp ugt i32 [[MAX]], [[MIN]]
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; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MIN]], i32 [[MAX]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%cmp1 = icmp ugt i32 %x, %y
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%max = select i1 %cmp1, i32 %x, i32 %y
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%cmp2 = icmp sgt i32 %y, %x
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%min = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp ugt i32 %max, %min
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%r = select i1 %cmp3, i32 %min, i32 %max
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ret i32 %r
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}
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; Negative test - mismatch of min/max flavor
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define i32 @smin_of_umin_umax_wrong_pattern2(i32 %x, i32 %y) {
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; CHECK-LABEL: @smin_of_umin_umax_wrong_pattern2(
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP1]], i32 [[Y]], i32 [[X]]
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; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[X]], [[Y]]
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; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
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; CHECK-NEXT: [[CMP3:%.*]] = icmp sgt i32 [[MAX]], [[MIN]]
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; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MIN]], i32 [[MAX]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%cmp1 = icmp ult i32 %x, %y
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%max = select i1 %cmp1, i32 %y, i32 %x
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%cmp2 = icmp ult i32 %x, %y
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%min = select i1 %cmp2, i32 %x, i32 %y
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%cmp3 = icmp sgt i32 %max, %min
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%r = select i1 %cmp3, i32 %min, i32 %max
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ret i32 %r
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}
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; Negative test - operands must match
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define <2 x i32> @umin_of_umin_umax_wrong_operand(<2 x i32> %x, <2 x i32> %y, <2 x i32> %z) {
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; CHECK-LABEL: @umin_of_umin_umax_wrong_operand(
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt <2 x i32> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP1]], <2 x i32> [[X]], <2 x i32> [[Y]]
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; CHECK-NEXT: [[CMP2:%.*]] = icmp ult <2 x i32> [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP2]], <2 x i32> [[X]], <2 x i32> [[Z]]
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; CHECK-NEXT: [[CMP3:%.*]] = icmp ult <2 x i32> [[MIN]], [[MAX]]
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; CHECK-NEXT: [[R:%.*]] = select <2 x i1> [[CMP3]], <2 x i32> [[MIN]], <2 x i32> [[MAX]]
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; CHECK-NEXT: ret <2 x i32> [[R]]
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;
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%cmp1 = icmp ugt <2 x i32> %x, %y
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%max = select <2 x i1> %cmp1, <2 x i32> %x, <2 x i32> %y
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%cmp2 = icmp ult <2 x i32> %x, %z
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%min = select <2 x i1> %cmp2, <2 x i32> %x, <2 x i32> %z
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%cmp3 = icmp ult <2 x i32> %min, %max
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%r = select <2 x i1> %cmp3, <2 x i32> %min, <2 x i32> %max
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|
ret <2 x i32> %r
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|
}
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|
|
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; Negative test - operands must match
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|
|
|
define i32 @umin_of_umin_umax_wrong_operand2(i32 %x, i32 %y, i32 %z) {
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|
; CHECK-LABEL: @umin_of_umin_umax_wrong_operand2(
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i32 [[X:%.*]], [[Z:%.*]]
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|
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP1]], i32 [[Z]], i32 [[X]]
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|
; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[Y:%.*]], [[X]]
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|
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]]
|
|
; CHECK-NEXT: [[CMP3:%.*]] = icmp ult i32 [[MIN]], [[MAX]]
|
|
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MIN]], i32 [[MAX]]
|
|
; CHECK-NEXT: ret i32 [[R]]
|
|
;
|
|
%cmp1 = icmp ult i32 %x, %z
|
|
%max = select i1 %cmp1, i32 %z, i32 %x
|
|
%cmp2 = icmp ugt i32 %y, %x
|
|
%min = select i1 %cmp2, i32 %x, i32 %y
|
|
%cmp3 = icmp ult i32 %min, %max
|
|
%r = select i1 %cmp3, i32 %min, i32 %max
|
|
ret i32 %r
|
|
}
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