1 ; Test that the exp2 library call simplifier works correctly. 2 ; 3 ; RUN: opt < %s -instcombine -S | FileCheck %s 4 5 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" 6 7 declare double @exp2(double) 8 declare float @exp2f(float) 9 10 ; Check exp2(sitofp(x)) -> ldexp(1.0, sext(x)). 11 12 define double @test_simplify1(i32 %x) { 13 ; CHECK-LABEL: @test_simplify1( 14 %conv = sitofp i32 %x to double 15 %ret = call double @exp2(double %conv) 16 ; CHECK: call double @ldexp 17 ret double %ret 18 } 19 20 define double @test_simplify2(i16 signext %x) { 21 ; CHECK-LABEL: @test_simplify2( 22 %conv = sitofp i16 %x to double 23 %ret = call double @exp2(double %conv) 24 ; CHECK: call double @ldexp 25 ret double %ret 26 } 27 28 define double @test_simplify3(i8 signext %x) { 29 ; CHECK-LABEL: @test_simplify3( 30 %conv = sitofp i8 %x to double 31 %ret = call double @exp2(double %conv) 32 ; CHECK: call double @ldexp 33 ret double %ret 34 } 35 36 define float @test_simplify4(i32 %x) { 37 ; CHECK-LABEL: @test_simplify4( 38 %conv = sitofp i32 %x to float 39 %ret = call float @exp2f(float %conv) 40 ; CHECK: call float @ldexpf 41 ret float %ret 42 } 43 44 ; Check exp2(uitofp(x)) -> ldexp(1.0, zext(x)). 45 46 define double @test_no_simplify1(i32 %x) { 47 ; CHECK-LABEL: @test_no_simplify1( 48 %conv = uitofp i32 %x to double 49 %ret = call double @exp2(double %conv) 50 ; CHECK: call double @exp2 51 ret double %ret 52 } 53 54 define double @test_simplify6(i16 zeroext %x) { 55 ; CHECK-LABEL: @test_simplify6( 56 %conv = uitofp i16 %x to double 57 %ret = call double @exp2(double %conv) 58 ; CHECK: call double @ldexp 59 ret double %ret 60 } 61 62 define double @test_simplify7(i8 zeroext %x) { 63 ; CHECK-LABEL: @test_simplify7( 64 %conv = uitofp i8 %x to double 65 %ret = call double @exp2(double %conv) 66 ; CHECK: call double @ldexp 67 ret double %ret 68 } 69 70 define float @test_simplify8(i8 zeroext %x) { 71 ; CHECK-LABEL: @test_simplify8( 72 %conv = uitofp i8 %x to float 73 %ret = call float @exp2f(float %conv) 74 ; CHECK: call float @ldexpf 75 ret float %ret 76 } 77
