2013-05-06 20:45:16 +02:00
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; RUN: opt < %s -instcombine -S | FileCheck %s
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Provide InstCombines for the following 3 cases:
A * (1 - (uitofp i1 C)) -> select C, 0, A
B * (uitofp i1 C) -> select C, B, 0
select C, 0, A + select C, B, 0 -> select C, B, A
These come up in code that has been hand-optimized from a select to a linear blend,
on platforms where that may have mattered. We want to undo such changes
with the following transform:
A*(1 - uitofp i1 C) + B*(uitofp i1 C) -> select C, A, B
llvm-svn: 181216
2013-05-06 18:55:50 +02:00
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;; Target triple for gep raising case below.
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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"
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target triple = "i686-apple-darwin8"
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define float @test1(float %A, float %B, i1 %C) {
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EntryBlock:
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;; A*(1 - uitofp i1 C) -> select C, 0, A
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%cf = uitofp i1 %C to float
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%mc = fsub float 1.000000e+00, %cf
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%p1 = fmul fast float %A, %mc
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ret float %p1
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2013-05-06 20:45:16 +02:00
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; CHECK: @test1
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; CHECK: select i1 %C, float -0.000000e+00, float %A
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Provide InstCombines for the following 3 cases:
A * (1 - (uitofp i1 C)) -> select C, 0, A
B * (uitofp i1 C) -> select C, B, 0
select C, 0, A + select C, B, 0 -> select C, B, A
These come up in code that has been hand-optimized from a select to a linear blend,
on platforms where that may have mattered. We want to undo such changes
with the following transform:
A*(1 - uitofp i1 C) + B*(uitofp i1 C) -> select C, A, B
llvm-svn: 181216
2013-05-06 18:55:50 +02:00
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}
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define float @test2(float %A, float %B, i1 %C) {
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EntryBlock:
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;; B*(uitofp i1 C) -> select C, B, 0
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%cf = uitofp i1 %C to float
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%p2 = fmul fast float %B, %cf
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ret float %p2
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2013-05-06 20:45:16 +02:00
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; CHECK: @test2
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; CHECK: select i1 %C, float %B, float -0.000000e+00
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Provide InstCombines for the following 3 cases:
A * (1 - (uitofp i1 C)) -> select C, 0, A
B * (uitofp i1 C) -> select C, B, 0
select C, 0, A + select C, B, 0 -> select C, B, A
These come up in code that has been hand-optimized from a select to a linear blend,
on platforms where that may have mattered. We want to undo such changes
with the following transform:
A*(1 - uitofp i1 C) + B*(uitofp i1 C) -> select C, A, B
llvm-svn: 181216
2013-05-06 18:55:50 +02:00
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}
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define float @test3(float %A, float %B, i1 %C) {
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EntryBlock:
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;; A*(1 - uitofp i1 C) + B*(uitofp i1 C) -> select C, A, B
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%cf = uitofp i1 %C to float
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%mc = fsub float 1.000000e+00, %cf
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%p1 = fmul fast float %A, %mc
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%p2 = fmul fast float %B, %cf
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%s1 = fadd fast float %p1, %p2
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ret float %s1
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2013-05-06 20:45:16 +02:00
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; CHECK: @test3
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; CHECK: select i1 %C, float %B, float %A
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Provide InstCombines for the following 3 cases:
A * (1 - (uitofp i1 C)) -> select C, 0, A
B * (uitofp i1 C) -> select C, B, 0
select C, 0, A + select C, B, 0 -> select C, B, A
These come up in code that has been hand-optimized from a select to a linear blend,
on platforms where that may have mattered. We want to undo such changes
with the following transform:
A*(1 - uitofp i1 C) + B*(uitofp i1 C) -> select C, A, B
llvm-svn: 181216
2013-05-06 18:55:50 +02:00
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}
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2013-05-10 11:16:52 +02:00
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; PR15952
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define float @test4(float %A, float %B, i32 %C) {
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%cf = uitofp i32 %C to float
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%mc = fsub float 1.000000e+00, %cf
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%p1 = fmul fast float %A, %mc
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ret float %p1
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; CHECK: @test4
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; CHECK: uitofp
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}
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define float @test5(float %A, float %B, i32 %C) {
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%cf = uitofp i32 %C to float
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%p2 = fmul fast float %B, %cf
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ret float %p2
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; CHECK: @test5
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; CHECK: uitofp
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}
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