diff --git a/test/Transforms/InstCombine/minmax-of-minmax.ll b/test/Transforms/InstCombine/minmax-of-minmax.ll new file mode 100644 index 00000000000..06a361f6bae --- /dev/null +++ b/test/Transforms/InstCombine/minmax-of-minmax.ll @@ -0,0 +1,382 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt -S -instcombine < %s | FileCheck %s + +define i32 @smax_of_smax_smin_commute0(i32 %x, i32 %y) { +; CHECK-LABEL: @smax_of_smax_smin_commute0( +; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP1]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[Y]], [[X]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp sgt i32 [[MAX]], [[MIN]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MAX]], i32 [[MIN]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp slt i32 %x, %y + %min = select i1 %cmp1, i32 %x, i32 %y + %cmp2 = icmp slt i32 %y, %x + %max = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp sgt i32 %max, %min + %r = select i1 %cmp3, i32 %max, i32 %min + ret i32 %r +} + +define i32 @smax_of_smax_smin_commute1(i32 %x, i32 %y) { +; CHECK-LABEL: @smax_of_smax_smin_commute1( +; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP1]], i32 [[Y]], i32 [[X]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[X]], [[Y]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp sgt i32 [[MAX]], [[MIN]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MAX]], i32 [[MIN]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp sgt i32 %x, %y + %min = select i1 %cmp1, i32 %y, i32 %x + %cmp2 = icmp sgt i32 %x, %y + %max = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp sgt i32 %max, %min + %r = select i1 %cmp3, i32 %max, i32 %min + ret i32 %r +} + +define i32 @smax_of_smax_smin_commute2(i32 %x, i32 %y) { +; CHECK-LABEL: @smax_of_smax_smin_commute2( +; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP1]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[Y]], [[X]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp slt i32 [[MIN]], [[MAX]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MAX]], i32 [[MIN]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp slt i32 %x, %y + %min = select i1 %cmp1, i32 %x, i32 %y + %cmp2 = icmp slt i32 %y, %x + %max = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp slt i32 %min, %max + %r = select i1 %cmp3, i32 %max, i32 %min + ret i32 %r +} + +define <2 x i32> @smax_of_smax_smin_commute3(<2 x i32> %x, <2 x i32> %y) { +; CHECK-LABEL: @smax_of_smax_smin_commute3( +; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt <2 x i32> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP1]], <2 x i32> [[Y]], <2 x i32> [[X]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt <2 x i32> [[X]], [[Y]] +; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP2]], <2 x i32> [[X]], <2 x i32> [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp slt <2 x i32> [[MIN]], [[MAX]] +; CHECK-NEXT: [[R:%.*]] = select <2 x i1> [[CMP3]], <2 x i32> [[MAX]], <2 x i32> [[MIN]] +; CHECK-NEXT: ret <2 x i32> [[R]] +; + %cmp1 = icmp sgt <2 x i32> %x, %y + %min = select <2 x i1> %cmp1, <2 x i32> %y, <2 x i32> %x + %cmp2 = icmp sgt <2 x i32> %x, %y + %max = select <2 x i1> %cmp2, <2 x i32> %x, <2 x i32> %y + %cmp3 = icmp slt <2 x i32> %min, %max + %r = select <2 x i1> %cmp3, <2 x i32> %max, <2 x i32> %min + ret <2 x i32> %r +} + +define i32 @smin_of_smin_smax_commute0(i32 %x, i32 %y) { +; CHECK-LABEL: @smin_of_smin_smax_commute0( +; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP1]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[Y]], [[X]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp sgt i32 [[MAX]], [[MIN]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MIN]], i32 [[MAX]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp sgt i32 %x, %y + %max = select i1 %cmp1, i32 %x, i32 %y + %cmp2 = icmp sgt i32 %y, %x + %min = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp sgt i32 %max, %min + %r = select i1 %cmp3, i32 %min, i32 %max + ret i32 %r +} + +define i32 @smin_of_smin_smax_commute1(i32 %x, i32 %y) { +; CHECK-LABEL: @smin_of_smin_smax_commute1( +; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP1]], i32 [[Y]], i32 [[X]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[X]], [[Y]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp sgt i32 [[MAX]], [[MIN]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MIN]], i32 [[MAX]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp slt i32 %x, %y + %max = select i1 %cmp1, i32 %y, i32 %x + %cmp2 = icmp slt i32 %x, %y + %min = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp sgt i32 %max, %min + %r = select i1 %cmp3, i32 %min, i32 %max + ret i32 %r +} + +define <2 x i32> @smin_of_smin_smax_commute2(<2 x i32> %x, <2 x i32> %y) { +; CHECK-LABEL: @smin_of_smin_smax_commute2( +; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt <2 x i32> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP1]], <2 x i32> [[X]], <2 x i32> [[Y]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp slt <2 x i32> [[X]], [[Y]] +; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP2]], <2 x i32> [[X]], <2 x i32> [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp slt <2 x i32> [[MIN]], [[MAX]] +; CHECK-NEXT: [[R:%.*]] = select <2 x i1> [[CMP3]], <2 x i32> [[MIN]], <2 x i32> [[MAX]] +; CHECK-NEXT: ret <2 x i32> [[R]] +; + %cmp1 = icmp sgt <2 x i32> %x, %y + %max = select <2 x i1> %cmp1, <2 x i32> %x, <2 x i32> %y + %cmp2 = icmp slt <2 x i32> %x, %y + %min = select <2 x i1> %cmp2, <2 x i32> %x, <2 x i32> %y + %cmp3 = icmp slt <2 x i32> %min, %max + %r = select <2 x i1> %cmp3, <2 x i32> %min, <2 x i32> %max + ret <2 x i32> %r +} + +define i32 @smin_of_smin_smax_commute3(i32 %x, i32 %y) { +; CHECK-LABEL: @smin_of_smin_smax_commute3( +; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP1]], i32 [[Y]], i32 [[X]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[Y]], [[X]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp slt i32 [[MIN]], [[MAX]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MIN]], i32 [[MAX]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp slt i32 %x, %y + %max = select i1 %cmp1, i32 %y, i32 %x + %cmp2 = icmp sgt i32 %y, %x + %min = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp slt i32 %min, %max + %r = select i1 %cmp3, i32 %min, i32 %max + ret i32 %r +} + +define i32 @umax_of_umax_umin_commute0(i32 %x, i32 %y) { +; CHECK-LABEL: @umax_of_umax_umin_commute0( +; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP1]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[Y]], [[X]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp ugt i32 [[MAX]], [[MIN]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MAX]], i32 [[MIN]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp ult i32 %x, %y + %min = select i1 %cmp1, i32 %x, i32 %y + %cmp2 = icmp ult i32 %y, %x + %max = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp ugt i32 %max, %min + %r = select i1 %cmp3, i32 %max, i32 %min + ret i32 %r +} + +define i32 @umax_of_umax_umin_commute1(i32 %x, i32 %y) { +; CHECK-LABEL: @umax_of_umax_umin_commute1( +; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP1]], i32 [[Y]], i32 [[X]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[X]], [[Y]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp ugt i32 [[MAX]], [[MIN]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MAX]], i32 [[MIN]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp ugt i32 %x, %y + %min = select i1 %cmp1, i32 %y, i32 %x + %cmp2 = icmp ugt i32 %x, %y + %max = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp ugt i32 %max, %min + %r = select i1 %cmp3, i32 %max, i32 %min + ret i32 %r +} + +define i32 @umax_of_umax_umin_commute2(i32 %x, i32 %y) { +; CHECK-LABEL: @umax_of_umax_umin_commute2( +; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP1]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[Y]], [[X]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp ult i32 [[MIN]], [[MAX]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MAX]], i32 [[MIN]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp ult i32 %x, %y + %min = select i1 %cmp1, i32 %x, i32 %y + %cmp2 = icmp ult i32 %y, %x + %max = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp ult i32 %min, %max + %r = select i1 %cmp3, i32 %max, i32 %min + ret i32 %r +} + +define <2 x i32> @umax_of_umax_umin_commute3(<2 x i32> %x, <2 x i32> %y) { +; CHECK-LABEL: @umax_of_umax_umin_commute3( +; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt <2 x i32> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP1]], <2 x i32> [[Y]], <2 x i32> [[X]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt <2 x i32> [[X]], [[Y]] +; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP2]], <2 x i32> [[X]], <2 x i32> [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp ult <2 x i32> [[MIN]], [[MAX]] +; CHECK-NEXT: [[R:%.*]] = select <2 x i1> [[CMP3]], <2 x i32> [[MAX]], <2 x i32> [[MIN]] +; CHECK-NEXT: ret <2 x i32> [[R]] +; + %cmp1 = icmp ugt <2 x i32> %x, %y + %min = select <2 x i1> %cmp1, <2 x i32> %y, <2 x i32> %x + %cmp2 = icmp ugt <2 x i32> %x, %y + %max = select <2 x i1> %cmp2, <2 x i32> %x, <2 x i32> %y + %cmp3 = icmp ult <2 x i32> %min, %max + %r = select <2 x i1> %cmp3, <2 x i32> %max, <2 x i32> %min + ret <2 x i32> %r +} + +define i32 @umin_of_umin_umax_commute0(i32 %x, i32 %y) { +; CHECK-LABEL: @umin_of_umin_umax_commute0( +; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP1]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[Y]], [[X]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp ugt i32 [[MAX]], [[MIN]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MIN]], i32 [[MAX]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp ugt i32 %x, %y + %max = select i1 %cmp1, i32 %x, i32 %y + %cmp2 = icmp ugt i32 %y, %x + %min = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp ugt i32 %max, %min + %r = select i1 %cmp3, i32 %min, i32 %max + ret i32 %r +} + +define i32 @umin_of_umin_umax_commute1(i32 %x, i32 %y) { +; CHECK-LABEL: @umin_of_umin_umax_commute1( +; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP1]], i32 [[Y]], i32 [[X]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[X]], [[Y]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp ugt i32 [[MAX]], [[MIN]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MIN]], i32 [[MAX]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp ult i32 %x, %y + %max = select i1 %cmp1, i32 %y, i32 %x + %cmp2 = icmp ult i32 %x, %y + %min = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp ugt i32 %max, %min + %r = select i1 %cmp3, i32 %min, i32 %max + ret i32 %r +} + +define <2 x i32> @umin_of_umin_umax_commute2(<2 x i32> %x, <2 x i32> %y) { +; CHECK-LABEL: @umin_of_umin_umax_commute2( +; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt <2 x i32> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP1]], <2 x i32> [[X]], <2 x i32> [[Y]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp ult <2 x i32> [[X]], [[Y]] +; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP2]], <2 x i32> [[X]], <2 x i32> [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp ult <2 x i32> [[MIN]], [[MAX]] +; CHECK-NEXT: [[R:%.*]] = select <2 x i1> [[CMP3]], <2 x i32> [[MIN]], <2 x i32> [[MAX]] +; CHECK-NEXT: ret <2 x i32> [[R]] +; + %cmp1 = icmp ugt <2 x i32> %x, %y + %max = select <2 x i1> %cmp1, <2 x i32> %x, <2 x i32> %y + %cmp2 = icmp ult <2 x i32> %x, %y + %min = select <2 x i1> %cmp2, <2 x i32> %x, <2 x i32> %y + %cmp3 = icmp ult <2 x i32> %min, %max + %r = select <2 x i1> %cmp3, <2 x i32> %min, <2 x i32> %max + ret <2 x i32> %r +} + +define i32 @umin_of_umin_umax_commute3(i32 %x, i32 %y) { +; CHECK-LABEL: @umin_of_umin_umax_commute3( +; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP1]], i32 [[Y]], i32 [[X]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[Y]], [[X]] +; 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, %y + %max = select i1 %cmp1, i32 %y, 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 +} + +define i32 @umin_of_smin_umax_wrong_pattern(i32 %x, i32 %y) { +; CHECK-LABEL: @umin_of_smin_umax_wrong_pattern( +; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP1]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[Y]], [[X]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp ugt i32 [[MAX]], [[MIN]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MIN]], i32 [[MAX]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp ugt i32 %x, %y + %max = select i1 %cmp1, i32 %x, i32 %y + %cmp2 = icmp sgt i32 %y, %x + %min = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp ugt i32 %max, %min + %r = select i1 %cmp3, i32 %min, i32 %max + ret i32 %r +} + +define i32 @smin_of_umin_umax_wrong_pattern2(i32 %x, i32 %y) { +; CHECK-LABEL: @smin_of_umin_umax_wrong_pattern2( +; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP1]], i32 [[Y]], i32 [[X]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[X]], [[Y]] +; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 [[Y]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp sgt i32 [[MAX]], [[MIN]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], i32 [[MIN]], i32 [[MAX]] +; CHECK-NEXT: ret i32 [[R]] +; + %cmp1 = icmp ult i32 %x, %y + %max = select i1 %cmp1, i32 %y, i32 %x + %cmp2 = icmp ult i32 %x, %y + %min = select i1 %cmp2, i32 %x, i32 %y + %cmp3 = icmp sgt i32 %max, %min + %r = select i1 %cmp3, i32 %min, i32 %max + ret i32 %r +} + +define <2 x i32> @umin_of_umin_umax_wrong_operand(<2 x i32> %x, <2 x i32> %y, <2 x i32> %z) { +; CHECK-LABEL: @umin_of_umin_umax_wrong_operand( +; CHECK-NEXT: [[CMP1:%.*]] = icmp ugt <2 x i32> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP1]], <2 x i32> [[X]], <2 x i32> [[Y]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp ult <2 x i32> [[X]], [[Z:%.*]] +; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP2]], <2 x i32> [[X]], <2 x i32> [[Z]] +; CHECK-NEXT: [[CMP3:%.*]] = icmp ult <2 x i32> [[MIN]], [[MAX]] +; CHECK-NEXT: [[R:%.*]] = select <2 x i1> [[CMP3]], <2 x i32> [[MIN]], <2 x i32> [[MAX]] +; CHECK-NEXT: ret <2 x i32> [[R]] +; + %cmp1 = icmp ugt <2 x i32> %x, %y + %max = select <2 x i1> %cmp1, <2 x i32> %x, <2 x i32> %y + %cmp2 = icmp ult <2 x i32> %x, %z + %min = select <2 x i1> %cmp2, <2 x i32> %x, <2 x i32> %z + %cmp3 = icmp ult <2 x i32> %min, %max + %r = select <2 x i1> %cmp3, <2 x i32> %min, <2 x i32> %max + ret <2 x i32> %r +} + +define i32 @umin_of_umin_umax_wrong_operand2(i32 %x, i32 %y, i32 %z) { +; CHECK-LABEL: @umin_of_umin_umax_wrong_operand2( +; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i32 [[X:%.*]], [[Z:%.*]] +; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP1]], i32 [[Z]], i32 [[X]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[Y:%.*]], [[X]] +; 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 +}