forked from OSchip/llvm-project
95 lines
3.3 KiB
LLVM
95 lines
3.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
|
|
|
|
; Tests folding constants from two similar selects that feed a add
|
|
|
|
define float @test1a(i1 zeroext %arg) #0 {
|
|
; CHECK-LABEL: @test1a(
|
|
; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[ARG:%.*]], float 6.000000e+00, float 1.500000e+01
|
|
; CHECK-NEXT: ret float [[TMP2]]
|
|
;
|
|
%tmp = select i1 %arg, float 5.000000e+00, float 6.000000e+00
|
|
%tmp1 = select i1 %arg, float 1.000000e+00, float 9.000000e+00
|
|
%tmp2 = fadd float %tmp, %tmp1
|
|
ret float %tmp2
|
|
}
|
|
|
|
; Tests folding multiple expression constants from similar selects that feed a adds
|
|
|
|
define float @test1b(i1 zeroext %arg) #0 {
|
|
; CHECK-LABEL: @test1b(
|
|
; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[ARG:%.*]], float 7.250000e+00, float 2.800000e+01
|
|
; CHECK-NEXT: ret float [[TMP5]]
|
|
;
|
|
%tmp = select i1 %arg, float 5.000000e+00, float 6.000000e+00
|
|
%tmp1 = select i1 %arg, float 1.000000e+00, float 9.000000e+00
|
|
%tmp2 = select i1 %arg, float 2.500000e-01, float 4.000000e+00
|
|
%tmp3 = fadd float %tmp, %tmp1
|
|
%tmp4 = fadd float %tmp2, %tmp1
|
|
%tmp5 = fadd float %tmp4, %tmp3
|
|
ret float %tmp5
|
|
}
|
|
|
|
; Tests folding constants from two similar selects that feed a sub
|
|
|
|
define float @test2(i1 zeroext %arg) #0 {
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[ARG:%.*]], float 4.000000e+00, float -3.000000e+00
|
|
; CHECK-NEXT: ret float [[TMP2]]
|
|
;
|
|
%tmp = select i1 %arg, float 5.000000e+00, float 6.000000e+00
|
|
%tmp1 = select i1 %arg, float 1.000000e+00, float 9.000000e+00
|
|
%tmp2 = fsub float %tmp, %tmp1
|
|
ret float %tmp2
|
|
}
|
|
|
|
; Tests folding constants from two similar selects that feed a mul
|
|
|
|
define float @test3(i1 zeroext %arg) #0 {
|
|
; CHECK-LABEL: @test3(
|
|
; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[ARG:%.*]], float 5.000000e+00, float 5.400000e+01
|
|
; CHECK-NEXT: ret float [[TMP2]]
|
|
;
|
|
%tmp = select i1 %arg, float 5.000000e+00, float 6.000000e+00
|
|
%tmp1 = select i1 %arg, float 1.000000e+00, float 9.000000e+00
|
|
%tmp2 = fmul float %tmp, %tmp1
|
|
ret float %tmp2
|
|
}
|
|
|
|
declare void @use_float(float)
|
|
|
|
; Tests folding constants if the selects have multiple uses but
|
|
; we can fold away the binary op with a select.
|
|
|
|
define float @test4(i1 zeroext %arg) #0 {
|
|
; CHECK-LABEL: @test4(
|
|
; CHECK-NEXT: [[TMP:%.*]] = select i1 [[ARG:%.*]], float 5.000000e+00, float 6.000000e+00
|
|
; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[ARG]], float 5.000000e+00, float 5.400000e+01
|
|
; CHECK-NEXT: call void @use_float(float [[TMP]])
|
|
; CHECK-NEXT: ret float [[TMP2]]
|
|
;
|
|
%tmp = select i1 %arg, float 5.000000e+00, float 6.000000e+00
|
|
%tmp1 = select i1 %arg, float 1.000000e+00, float 9.000000e+00
|
|
%tmp2 = fmul float %tmp, %tmp1
|
|
call void @use_float(float %tmp)
|
|
ret float %tmp2
|
|
}
|
|
|
|
; Tests not folding constants if we cannot fold away any of the selects.
|
|
|
|
define float @test5(i1 zeroext %arg, float %div) {
|
|
; CHECK-LABEL: @test5(
|
|
; CHECK-NEXT: [[TMP:%.*]] = select i1 [[ARG:%.*]], float [[DIV:%.*]], float 5.000000e+00
|
|
; CHECK-NEXT: [[MUL:%.*]] = fmul contract float [[TMP]], [[TMP]]
|
|
; CHECK-NEXT: call void @use_float(float [[TMP]])
|
|
; CHECK-NEXT: ret float [[MUL]]
|
|
;
|
|
%tmp = select i1 %arg, float %div, float 5.000000e+00
|
|
%mul = fmul contract float %tmp, %tmp
|
|
call void @use_float(float %tmp)
|
|
ret float %mul
|
|
}
|
|
|