| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| define float @select_fadd(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fadd( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float [[B:%.*]], float -0.000000e+00 |
| ; CHECK-NEXT: [[D:%.*]] = fadd float [[C]], [[A:%.*]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fadd float %A, %B |
| %D = select i1 %cond, float %C, float %A |
| ret float %D |
| } |
| |
| define float @select_fadd_swapped(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fadd_swapped( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float -0.000000e+00, float [[B:%.*]] |
| ; CHECK-NEXT: [[D:%.*]] = fadd float [[C]], [[A:%.*]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fadd float %A, %B |
| %D = select i1 %cond, float %A, float %C |
| ret float %D |
| } |
| |
| define float @select_fadd_fast_math(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fadd_fast_math( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float [[B:%.*]], float -0.000000e+00 |
| ; CHECK-NEXT: [[D:%.*]] = fadd fast float [[C]], [[A:%.*]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fadd fast float %A, %B |
| %D = select i1 %cond, float %C, float %A |
| ret float %D |
| } |
| |
| define float @select_fadd_swapped_fast_math(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fadd_swapped_fast_math( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float -0.000000e+00, float [[B:%.*]] |
| ; CHECK-NEXT: [[D:%.*]] = fadd fast float [[C]], [[A:%.*]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fadd fast float %A, %B |
| %D = select i1 %cond, float %A, float %C |
| ret float %D |
| } |
| |
| define float @select_fmul(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fmul( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float [[B:%.*]], float 1.000000e+00 |
| ; CHECK-NEXT: [[D:%.*]] = fmul float [[C]], [[A:%.*]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fmul float %A, %B |
| %D = select i1 %cond, float %C, float %A |
| ret float %D |
| } |
| |
| define float @select_fmul_swapped(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fmul_swapped( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float 1.000000e+00, float [[B:%.*]] |
| ; CHECK-NEXT: [[D:%.*]] = fmul float [[C]], [[A:%.*]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fmul float %A, %B |
| %D = select i1 %cond, float %A, float %C |
| ret float %D |
| } |
| |
| define float @select_fmul_fast_math(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fmul_fast_math( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float [[B:%.*]], float 1.000000e+00 |
| ; CHECK-NEXT: [[D:%.*]] = fmul fast float [[C]], [[A:%.*]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fmul fast float %A, %B |
| %D = select i1 %cond, float %C, float %A |
| ret float %D |
| } |
| |
| define float @select_fmul_swapped_fast_math(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fmul_swapped_fast_math( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float 1.000000e+00, float [[B:%.*]] |
| ; CHECK-NEXT: [[D:%.*]] = fmul fast float [[C]], [[A:%.*]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fmul fast float %A, %B |
| %D = select i1 %cond, float %A, float %C |
| ret float %D |
| } |
| |
| define float @select_fsub(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fsub( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float [[B:%.*]], float 0.000000e+00 |
| ; CHECK-NEXT: [[D:%.*]] = fsub float [[A:%.*]], [[C]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fsub float %A, %B |
| %D = select i1 %cond, float %C, float %A |
| ret float %D |
| } |
| |
| define float @select_fsub_swapped(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fsub_swapped( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float 0.000000e+00, float [[B:%.*]] |
| ; CHECK-NEXT: [[D:%.*]] = fsub float [[A:%.*]], [[C]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fsub float %A, %B |
| %D = select i1 %cond, float %A, float %C |
| ret float %D |
| } |
| |
| define float @select_fsub_fast_math(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fsub_fast_math( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float [[B:%.*]], float 0.000000e+00 |
| ; CHECK-NEXT: [[D:%.*]] = fsub fast float [[A:%.*]], [[C]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fsub fast float %A, %B |
| %D = select i1 %cond, float %C, float %A |
| ret float %D |
| } |
| |
| define float @select_fsub_swapped_fast_math(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fsub_swapped_fast_math( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float 0.000000e+00, float [[B:%.*]] |
| ; CHECK-NEXT: [[D:%.*]] = fsub fast float [[A:%.*]], [[C]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fsub fast float %A, %B |
| %D = select i1 %cond, float %A, float %C |
| ret float %D |
| } |
| |
| ; 'fsub' can only fold on the amount subtracted. |
| define float @select_fsub_invalid(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fsub_invalid( |
| ; CHECK-NEXT: [[C:%.*]] = fsub float [[B:%.*]], [[A:%.*]] |
| ; CHECK-NEXT: [[D:%.*]] = select i1 [[COND:%.*]], float [[C]], float [[A]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fsub float %B, %A |
| %D = select i1 %cond, float %C, float %A |
| ret float %D |
| } |
| |
| define float @select_fdiv(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fdiv( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float [[B:%.*]], float 1.000000e+00 |
| ; CHECK-NEXT: [[D:%.*]] = fdiv float [[A:%.*]], [[C]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fdiv float %A, %B |
| %D = select i1 %cond, float %C, float %A |
| ret float %D |
| } |
| |
| define float @select_fdiv_swapped(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fdiv_swapped( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float 1.000000e+00, float [[B:%.*]] |
| ; CHECK-NEXT: [[D:%.*]] = fdiv float [[A:%.*]], [[C]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fdiv float %A, %B |
| %D = select i1 %cond, float %A, float %C |
| ret float %D |
| } |
| |
| define float @select_fdiv_fast_math(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fdiv_fast_math( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float [[B:%.*]], float 1.000000e+00 |
| ; CHECK-NEXT: [[D:%.*]] = fdiv fast float [[A:%.*]], [[C]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fdiv fast float %A, %B |
| %D = select i1 %cond, float %C, float %A |
| ret float %D |
| } |
| |
| define float @select_fdiv_swapped_fast_math(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fdiv_swapped_fast_math( |
| ; CHECK-NEXT: [[C:%.*]] = select i1 [[COND:%.*]], float 1.000000e+00, float [[B:%.*]] |
| ; CHECK-NEXT: [[D:%.*]] = fdiv fast float [[A:%.*]], [[C]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fdiv fast float %A, %B |
| %D = select i1 %cond, float %A, float %C |
| ret float %D |
| } |
| |
| ; 'fdiv' can only fold on the divisor amount. |
| define float @select_fdiv_invalid(i1 %cond, float %A, float %B) { |
| ; CHECK-LABEL: @select_fdiv_invalid( |
| ; CHECK-NEXT: [[C:%.*]] = fdiv float [[B:%.*]], [[A:%.*]] |
| ; CHECK-NEXT: [[D:%.*]] = select i1 [[COND:%.*]], float [[C]], float [[A]] |
| ; CHECK-NEXT: ret float [[D]] |
| ; |
| %C = fdiv float %B, %A |
| %D = select i1 %cond, float %C, float %A |
| ret float %D |
| } |