1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2 ; RUN: opt < %s -instsimplify -S | FileCheck %s 3 4 define float @fdiv_constant_fold() { 5 ; CHECK-LABEL: @fdiv_constant_fold( 6 ; CHECK-NEXT: ret float 1.500000e+00 7 ; 8 %f = fdiv float 3.0, 2.0 9 ret float %f 10 } 11 12 define float @frem_constant_fold() { 13 ; CHECK-LABEL: @frem_constant_fold( 14 ; CHECK-NEXT: ret float 1.000000e+00 15 ; 16 %f = frem float 3.0, 2.0 17 ret float %f 18 } 19 20 define double @fmul_fdiv_common_operand(double %x, double %y) { 21 ; CHECK-LABEL: @fmul_fdiv_common_operand( 22 ; CHECK-NEXT: ret double %x 23 ; 24 %m = fmul double %x, %y 25 %d = fdiv reassoc nnan double %m, %y 26 ret double %d 27 } 28 29 ; Negative test - the fdiv must be reassociative and not allow NaNs. 30 31 define double @fmul_fdiv_common_operand_too_strict(double %x, double %y) { 32 ; CHECK-LABEL: @fmul_fdiv_common_operand_too_strict( 33 ; CHECK-NEXT: [[M:%.*]] = fmul fast double %x, %y 34 ; CHECK-NEXT: [[D:%.*]] = fdiv reassoc double [[M]], %y 35 ; CHECK-NEXT: ret double [[D]] 36 ; 37 %m = fmul fast double %x, %y 38 %d = fdiv reassoc double %m, %y 39 ret double %d 40 } 41 42 ; Commute the fmul operands. Use a vector type to verify that works too. 43 44 define <2 x float> @fmul_fdiv_common_operand_commute_vec(<2 x float> %x, <2 x float> %y) { 45 ; CHECK-LABEL: @fmul_fdiv_common_operand_commute_vec( 46 ; CHECK-NEXT: ret <2 x float> %x 47 ; 48 %m = fmul <2 x float> %y, %x 49 %d = fdiv fast <2 x float> %m, %y 50 ret <2 x float> %d 51 } 52 53
