| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -passes=instcombine < %s | FileCheck %s |
| |
| define i1 @sgt_3_impliesF_eq_2(i8 %x, i8 %y) { |
| ; CHECK-LABEL: @sgt_3_impliesF_eq_2( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[X:%.*]], 4 |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i8 [[SEL:%.*]], [[X]] |
| ; CHECK-NEXT: [[CMP3:%.*]] = select i1 [[CMP]], i1 [[CMP2]], i1 false |
| ; CHECK-NEXT: ret i1 [[CMP3]] |
| ; |
| %cmp = icmp sgt i8 %x, 3 |
| %sel = select i1 %cmp, i8 2, i8 %y |
| %cmp2 = icmp eq i8 %sel, %x |
| ret i1 %cmp2 |
| } |
| |
| define i1 @sgt_3_impliesT_sgt_2(i8 %x, i8 %y) { |
| ; CHECK-LABEL: @sgt_3_impliesT_sgt_2( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[X:%.*]], 4 |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i8 [[SEL:%.*]], [[X]] |
| ; CHECK-NEXT: [[CMP3:%.*]] = select i1 [[CMP]], i1 [[CMP2]], i1 false |
| ; CHECK-NEXT: ret i1 [[CMP3]] |
| ; |
| %cmp = icmp sgt i8 %x, 3 |
| %sel = select i1 %cmp, i8 2, i8 %y |
| %cmp2 = icmp sgt i8 %sel, %x |
| ret i1 %cmp2 |
| } |
| |
| define i1 @sgt_x_impliesF_eq_smin_todo(i8 %x, i8 %y, i8 %z) { |
| ; CHECK-LABEL: @sgt_x_impliesF_eq_smin_todo( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[X:%.*]], [[Z:%.*]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i8 -128, i8 [[Y:%.*]] |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i8 [[SEL]], [[X]] |
| ; CHECK-NEXT: ret i1 [[CMP2]] |
| ; |
| %cmp = icmp sgt i8 %x, %z |
| %sel = select i1 %cmp, i8 -128, i8 %y |
| %cmp2 = icmp eq i8 %sel, %x |
| ret i1 %cmp2 |
| } |
| |
| define i1 @slt_x_impliesT_ne_smin_todo(i8 %x, i8 %y, i8 %z) { |
| ; CHECK-LABEL: @slt_x_impliesT_ne_smin_todo( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[X:%.*]], [[Z:%.*]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i8 127, i8 [[Y:%.*]] |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp ne i8 [[SEL]], [[X]] |
| ; CHECK-NEXT: ret i1 [[CMP2]] |
| ; |
| %cmp = icmp slt i8 %x, %z |
| %sel = select i1 %cmp, i8 127, i8 %y |
| %cmp2 = icmp ne i8 %x, %sel |
| ret i1 %cmp2 |
| } |
| |
| define i1 @ult_x_impliesT_eq_umax_todo(i8 %x, i8 %y, i8 %z) { |
| ; CHECK-LABEL: @ult_x_impliesT_eq_umax_todo( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i8 [[Z:%.*]], [[X:%.*]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i8 -1, i8 [[Y:%.*]] |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp ne i8 [[SEL]], [[X]] |
| ; CHECK-NEXT: ret i1 [[CMP2]] |
| ; |
| %cmp = icmp ugt i8 %z, %x |
| %sel = select i1 %cmp, i8 255, i8 %y |
| %cmp2 = icmp ne i8 %sel, %x |
| ret i1 %cmp2 |
| } |
| |
| define i1 @ult_1_impliesF_eq_1(i8 %x, i8 %y) { |
| ; CHECK-LABEL: @ult_1_impliesF_eq_1( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[SEL:%.*]], 0 |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i8 [[X:%.*]], [[SEL]] |
| ; CHECK-NEXT: [[CMP3:%.*]] = select i1 [[CMP]], i1 [[CMP2]], i1 false |
| ; CHECK-NEXT: ret i1 [[CMP3]] |
| ; |
| %cmp = icmp ult i8 %x, 1 |
| %sel = select i1 %cmp, i8 1, i8 %y |
| %cmp2 = icmp eq i8 %x, %sel |
| ret i1 %cmp2 |
| } |
| |
| define i1 @ugt_x_impliesF_eq_umin_todo(i8 %x, i8 %y, i8 %z) { |
| ; CHECK-LABEL: @ugt_x_impliesF_eq_umin_todo( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i8 [[Z:%.*]], [[X:%.*]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i8 0, i8 [[Y:%.*]] |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i8 [[SEL]], [[X]] |
| ; CHECK-NEXT: ret i1 [[CMP2]] |
| ; |
| %cmp = icmp ugt i8 %z, %x |
| %sel = select i1 %cmp, i8 0, i8 %y |
| %cmp2 = icmp eq i8 %x, %sel |
| ret i1 %cmp2 |
| } |