1 ; RUN: opt -S -instcombine < %s | FileCheck %s 2 3 define float @test1(float %x) nounwind readnone ssp { 4 %div = fdiv float %x, 0x3810000000000000 5 ret float %div 6 7 ; CHECK-LABEL: @test1( 8 ; CHECK-NEXT: fmul float %x, 0x47D0000000000000 9 } 10 11 define float @test2(float %x) nounwind readnone ssp { 12 %div = fdiv float %x, 0x47E0000000000000 13 ret float %div 14 15 ; CHECK-LABEL: @test2( 16 ; CHECK-NEXT: fdiv float %x, 0x47E0000000000000 17 } 18 19 define float @test3(float %x) nounwind readnone ssp { 20 %div = fdiv float %x, 0x36A0000000000000 21 ret float %div 22 23 ; CHECK-LABEL: @test3( 24 ; CHECK-NEXT: fdiv float %x, 0x36A0000000000000 25 } 26 27 define float @test4(float %x) nounwind readnone ssp { 28 %div = fdiv fast float %x, 8.0 29 ret float %div 30 31 ; CHECK-LABEL: @test4( 32 ; CHECK-NEXT: fmul fast float %x, 1.250000e-01 33 } 34 35 define float @test5(float %x, float %y, float %z) nounwind readnone ssp { 36 %div1 = fdiv fast float %x, %y 37 %div2 = fdiv fast float %div1, %z 38 ret float %div2 39 ; CHECK-LABEL: @test5( 40 ; CHECK-NEXT: fmul fast 41 ; CHECK-NEXT: fdiv fast 42 } 43 44 define float @test6(float %x, float %y, float %z) nounwind readnone ssp { 45 %div1 = fdiv fast float %x, %y 46 %div2 = fdiv fast float %z, %div1 47 ret float %div2 48 ; CHECK-LABEL: @test6( 49 ; CHECK-NEXT: fmul fast 50 ; CHECK-NEXT: fdiv fast 51 } 52
