1 ; Test that the exp2 library call simplifier works correctly. 2 ; 3 ; RUN: opt < %s -instcombine -S | FileCheck %s 4 ; RUN: opt < %s -instcombine -S -mtriple=i386-pc-win32 | FileCheck %s -check-prefix=CHECK-WIN 5 6 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" 7 8 declare double @exp2(double) 9 declare float @exp2f(float) 10 11 ; Check exp2(sitofp(x)) -> ldexp(1.0, sext(x)). 12 13 define double @test_simplify1(i32 %x) { 14 ; CHECK-LABEL: @test_simplify1( 15 %conv = sitofp i32 %x to double 16 %ret = call double @exp2(double %conv) 17 ; CHECK: call double @ldexp 18 ret double %ret 19 } 20 21 define double @test_simplify2(i16 signext %x) { 22 ; CHECK-LABEL: @test_simplify2( 23 %conv = sitofp i16 %x to double 24 %ret = call double @exp2(double %conv) 25 ; CHECK: call double @ldexp 26 ret double %ret 27 } 28 29 define double @test_simplify3(i8 signext %x) { 30 ; CHECK-LABEL: @test_simplify3( 31 %conv = sitofp i8 %x to double 32 %ret = call double @exp2(double %conv) 33 ; CHECK: call double @ldexp 34 ret double %ret 35 } 36 37 define float @test_simplify4(i32 %x) { 38 ; CHECK-LABEL: @test_simplify4( 39 %conv = sitofp i32 %x to float 40 %ret = call float @exp2f(float %conv) 41 ; CHECK: call float @ldexpf 42 ret float %ret 43 } 44 45 ; Check exp2(uitofp(x)) -> ldexp(1.0, zext(x)). 46 47 define double @test_no_simplify1(i32 %x) { 48 ; CHECK-LABEL: @test_no_simplify1( 49 %conv = uitofp i32 %x to double 50 %ret = call double @exp2(double %conv) 51 ; CHECK: call double @exp2 52 ret double %ret 53 } 54 55 define double @test_simplify6(i16 zeroext %x) { 56 ; CHECK-LABEL: @test_simplify6( 57 %conv = uitofp i16 %x to double 58 %ret = call double @exp2(double %conv) 59 ; CHECK: call double @ldexp 60 ret double %ret 61 } 62 63 define double @test_simplify7(i8 zeroext %x) { 64 ; CHECK-LABEL: @test_simplify7( 65 %conv = uitofp i8 %x to double 66 %ret = call double @exp2(double %conv) 67 ; CHECK: call double @ldexp 68 ret double %ret 69 } 70 71 define float @test_simplify8(i8 zeroext %x) { 72 ; CHECK-LABEL: @test_simplify8( 73 %conv = uitofp i8 %x to float 74 %ret = call float @exp2f(float %conv) 75 ; CHECK: call float @ldexpf 76 ret float %ret 77 } 78 79 declare double @llvm.exp2.f64(double) 80 declare float @llvm.exp2.f32(float) 81 82 define double @test_simplify9(i8 zeroext %x) { 83 ; CHECK-LABEL: @test_simplify9( 84 ; CHECK-WIN-LABEL: @test_simplify9( 85 %conv = uitofp i8 %x to double 86 %ret = call double @llvm.exp2.f64(double %conv) 87 ; CHECK: call double @ldexp 88 ; CHECK-WIN: call double @ldexp 89 ret double %ret 90 } 91 92 define float @test_simplify10(i8 zeroext %x) { 93 ; CHECK-LABEL: @test_simplify10( 94 ; CHECK-WIN-LABEL: @test_simplify10( 95 %conv = uitofp i8 %x to float 96 %ret = call float @llvm.exp2.f32(float %conv) 97 ; CHECK: call float @ldexpf 98 ; CHECK-WIN-NOT: call float @ldexpf 99 ret float %ret 100 } 101
