forked from OSchip/llvm-project
214 lines
10 KiB
LLVM
214 lines
10 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -S -instcombine < %s | FileCheck %s
|
|
|
|
declare void @v4float_user(<4 x float>) #0
|
|
|
|
define float @extract_one_select(<4 x float> %a, <4 x float> %b, i32 %c) #0 {
|
|
; CHECK-LABEL: @extract_one_select(
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0
|
|
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], <4 x float> [[B:%.*]], <4 x float> [[A:%.*]]
|
|
; CHECK-NEXT: [[EXTRACT:%.*]] = extractelement <4 x float> [[SEL]], i32 2
|
|
; CHECK-NEXT: ret float [[EXTRACT]]
|
|
;
|
|
%cmp = icmp ne i32 %c, 0
|
|
%sel = select i1 %cmp, <4 x float> %a, <4 x float> %b
|
|
%extract = extractelement <4 x float> %sel, i32 2
|
|
ret float %extract
|
|
}
|
|
|
|
; Multiple extractelements
|
|
define <2 x float> @extract_two_select(<4 x float> %a, <4 x float> %b, i32 %c) #0 {
|
|
; CHECK-LABEL: @extract_two_select(
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0
|
|
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], <4 x float> [[B:%.*]], <4 x float> [[A:%.*]]
|
|
; CHECK-NEXT: [[BUILD2:%.*]] = shufflevector <4 x float> [[SEL]], <4 x float> undef, <2 x i32> <i32 1, i32 2>
|
|
; CHECK-NEXT: ret <2 x float> [[BUILD2]]
|
|
;
|
|
%cmp = icmp ne i32 %c, 0
|
|
%sel = select i1 %cmp, <4 x float> %a, <4 x float> %b
|
|
%extract1 = extractelement <4 x float> %sel, i32 1
|
|
%extract2 = extractelement <4 x float> %sel, i32 2
|
|
%build1 = insertelement <2 x float> undef, float %extract1, i32 0
|
|
%build2 = insertelement <2 x float> %build1, float %extract2, i32 1
|
|
ret <2 x float> %build2
|
|
}
|
|
|
|
; Select has an extra non-extractelement user, don't change it
|
|
define float @extract_one_select_user(<4 x float> %a, <4 x float> %b, i32 %c) #0 {
|
|
; CHECK-LABEL: @extract_one_select_user(
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0
|
|
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], <4 x float> [[B:%.*]], <4 x float> [[A:%.*]]
|
|
; CHECK-NEXT: [[EXTRACT:%.*]] = extractelement <4 x float> [[SEL]], i32 2
|
|
; CHECK-NEXT: call void @v4float_user(<4 x float> [[SEL]])
|
|
; CHECK-NEXT: ret float [[EXTRACT]]
|
|
;
|
|
%cmp = icmp ne i32 %c, 0
|
|
%sel = select i1 %cmp, <4 x float> %a, <4 x float> %b
|
|
%extract = extractelement <4 x float> %sel, i32 2
|
|
call void @v4float_user(<4 x float> %sel)
|
|
ret float %extract
|
|
}
|
|
|
|
define float @extract_one_vselect_user(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
|
|
; CHECK-LABEL: @extract_one_vselect_user(
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp eq <4 x i32> [[C:%.*]], zeroinitializer
|
|
; CHECK-NEXT: [[SEL:%.*]] = select <4 x i1> [[CMP]], <4 x float> [[B:%.*]], <4 x float> [[A:%.*]]
|
|
; CHECK-NEXT: [[EXTRACT:%.*]] = extractelement <4 x float> [[SEL]], i32 2
|
|
; CHECK-NEXT: call void @v4float_user(<4 x float> [[SEL]])
|
|
; CHECK-NEXT: ret float [[EXTRACT]]
|
|
;
|
|
%cmp = icmp ne <4 x i32> %c, zeroinitializer
|
|
%sel = select <4 x i1> %cmp, <4 x float> %a, <4 x float> %b
|
|
%extract = extractelement <4 x float> %sel, i32 2
|
|
call void @v4float_user(<4 x float> %sel)
|
|
ret float %extract
|
|
}
|
|
|
|
; Do not convert the vector select into a scalar select. That would increase
|
|
; the instruction count and potentially obfuscate a vector min/max idiom.
|
|
|
|
define float @extract_one_vselect(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
|
|
; CHECK-LABEL: @extract_one_vselect(
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp eq <4 x i32> [[C:%.*]], zeroinitializer
|
|
; CHECK-NEXT: [[SELECT:%.*]] = select <4 x i1> [[CMP]], <4 x float> [[B:%.*]], <4 x float> [[A:%.*]]
|
|
; CHECK-NEXT: [[EXTRACT:%.*]] = extractelement <4 x float> [[SELECT]], i32 0
|
|
; CHECK-NEXT: ret float [[EXTRACT]]
|
|
;
|
|
%cmp = icmp ne <4 x i32> %c, zeroinitializer
|
|
%select = select <4 x i1> %cmp, <4 x float> %a, <4 x float> %b
|
|
%extract = extractelement <4 x float> %select, i32 0
|
|
ret float %extract
|
|
}
|
|
|
|
; Multiple extractelements from a vector select
|
|
define <2 x float> @extract_two_vselect(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
|
|
; CHECK-LABEL: @extract_two_vselect(
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp eq <4 x i32> [[C:%.*]], zeroinitializer
|
|
; CHECK-NEXT: [[SEL:%.*]] = select <4 x i1> [[CMP]], <4 x float> [[B:%.*]], <4 x float> [[A:%.*]]
|
|
; CHECK-NEXT: [[BUILD2:%.*]] = shufflevector <4 x float> [[SEL]], <4 x float> undef, <2 x i32> <i32 1, i32 2>
|
|
; CHECK-NEXT: ret <2 x float> [[BUILD2]]
|
|
;
|
|
%cmp = icmp ne <4 x i32> %c, zeroinitializer
|
|
%sel = select <4 x i1> %cmp, <4 x float> %a, <4 x float> %b
|
|
%extract1 = extractelement <4 x float> %sel, i32 1
|
|
%extract2 = extractelement <4 x float> %sel, i32 2
|
|
%build1 = insertelement <2 x float> undef, float %extract1, i32 0
|
|
%build2 = insertelement <2 x float> %build1, float %extract2, i32 1
|
|
ret <2 x float> %build2
|
|
}
|
|
|
|
; The vector selects are not decomposed into scalar selects because that would increase
|
|
; the instruction count. Extract+insert is converted to non-lane-crossing shuffles.
|
|
; Test multiple extractelements
|
|
define <4 x float> @simple_vector_select(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
|
|
; CHECK-LABEL: @simple_vector_select(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <4 x i32> [[C:%.*]], i32 0
|
|
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[TMP0]], 0
|
|
; CHECK-NEXT: [[A_SINK:%.*]] = select i1 [[TOBOOL]], <4 x float> [[B:%.*]], <4 x float> [[A:%.*]]
|
|
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x i32> [[C]], i32 1
|
|
; CHECK-NEXT: [[TOBOOL1:%.*]] = icmp eq i32 [[TMP1]], 0
|
|
; CHECK-NEXT: [[A_SINK1:%.*]] = select i1 [[TOBOOL1]], <4 x float> [[B]], <4 x float> [[A]]
|
|
; CHECK-NEXT: [[TMP2:%.*]] = shufflevector <4 x float> [[A_SINK]], <4 x float> [[A_SINK1]], <4 x i32> <i32 0, i32 5, i32 undef, i32 undef>
|
|
; CHECK-NEXT: [[TMP3:%.*]] = extractelement <4 x i32> [[C]], i32 2
|
|
; CHECK-NEXT: [[TOBOOL6:%.*]] = icmp eq i32 [[TMP3]], 0
|
|
; CHECK-NEXT: [[A_SINK2:%.*]] = select i1 [[TOBOOL6]], <4 x float> [[B]], <4 x float> [[A]]
|
|
; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <4 x float> [[TMP2]], <4 x float> [[A_SINK2]], <4 x i32> <i32 0, i32 1, i32 6, i32 undef>
|
|
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <4 x i32> [[C]], i32 3
|
|
; CHECK-NEXT: [[TOBOOL11:%.*]] = icmp eq i32 [[TMP5]], 0
|
|
; CHECK-NEXT: [[A_SINK3:%.*]] = select i1 [[TOBOOL11]], <4 x float> [[B]], <4 x float> [[A]]
|
|
; CHECK-NEXT: [[TMP6:%.*]] = shufflevector <4 x float> [[TMP4]], <4 x float> [[A_SINK3]], <4 x i32> <i32 0, i32 1, i32 2, i32 7>
|
|
; CHECK-NEXT: ret <4 x float> [[TMP6]]
|
|
;
|
|
entry:
|
|
%0 = extractelement <4 x i32> %c, i32 0
|
|
%tobool = icmp ne i32 %0, 0
|
|
%a.sink = select i1 %tobool, <4 x float> %a, <4 x float> %b
|
|
%1 = extractelement <4 x float> %a.sink, i32 0
|
|
%2 = insertelement <4 x float> undef, float %1, i32 0
|
|
%3 = extractelement <4 x i32> %c, i32 1
|
|
%tobool1 = icmp ne i32 %3, 0
|
|
%a.sink1 = select i1 %tobool1, <4 x float> %a, <4 x float> %b
|
|
%4 = extractelement <4 x float> %a.sink1, i32 1
|
|
%5 = insertelement <4 x float> %2, float %4, i32 1
|
|
%6 = extractelement <4 x i32> %c, i32 2
|
|
%tobool6 = icmp ne i32 %6, 0
|
|
%a.sink2 = select i1 %tobool6, <4 x float> %a, <4 x float> %b
|
|
%7 = extractelement <4 x float> %a.sink2, i32 2
|
|
%8 = insertelement <4 x float> %5, float %7, i32 2
|
|
%9 = extractelement <4 x i32> %c, i32 3
|
|
%tobool11 = icmp ne i32 %9, 0
|
|
%a.sink3 = select i1 %tobool11, <4 x float> %a, <4 x float> %b
|
|
%10 = extractelement <4 x float> %a.sink3, i32 3
|
|
%11 = insertelement <4 x float> %8, float %10, i32 3
|
|
ret <4 x float> %11
|
|
}
|
|
|
|
define <4 x i32> @extract_cond(<4 x i32> %x, <4 x i32> %y, <4 x i1> %condv) {
|
|
; CHECK-LABEL: @extract_cond(
|
|
; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <4 x i1> [[CONDV:%.*]], <4 x i1> undef, <4 x i32> <i32 3, i32 3, i32 3, i32 3>
|
|
; CHECK-NEXT: [[R:%.*]] = select <4 x i1> [[DOTSPLAT]], <4 x i32> [[X:%.*]], <4 x i32> [[Y:%.*]]
|
|
; CHECK-NEXT: ret <4 x i32> [[R]]
|
|
;
|
|
%cond = extractelement <4 x i1> %condv, i32 3
|
|
%r = select i1 %cond, <4 x i32> %x, <4 x i32> %y
|
|
ret <4 x i32> %r
|
|
}
|
|
|
|
define <4 x i32> @splat_cond(<4 x i32> %x, <4 x i32> %y, <4 x i1> %condv) {
|
|
; CHECK-LABEL: @splat_cond(
|
|
; CHECK-NEXT: [[SPLATCOND:%.*]] = shufflevector <4 x i1> [[CONDV:%.*]], <4 x i1> undef, <4 x i32> <i32 3, i32 3, i32 3, i32 3>
|
|
; CHECK-NEXT: [[R:%.*]] = select <4 x i1> [[SPLATCOND]], <4 x i32> [[X:%.*]], <4 x i32> [[Y:%.*]]
|
|
; CHECK-NEXT: ret <4 x i32> [[R]]
|
|
;
|
|
%splatcond = shufflevector <4 x i1> %condv, <4 x i1> undef, <4 x i32> <i32 3, i32 3, i32 3, i32 3>
|
|
%r = select <4 x i1> %splatcond, <4 x i32> %x, <4 x i32> %y
|
|
ret <4 x i32> %r
|
|
}
|
|
|
|
declare void @extra_use(i1)
|
|
|
|
; Negative test
|
|
|
|
define <4 x i32> @extract_cond_extra_use(<4 x i32> %x, <4 x i32> %y, <4 x i1> %condv) {
|
|
; CHECK-LABEL: @extract_cond_extra_use(
|
|
; CHECK-NEXT: [[COND:%.*]] = extractelement <4 x i1> [[CONDV:%.*]], i32 3
|
|
; CHECK-NEXT: call void @extra_use(i1 [[COND]])
|
|
; CHECK-NEXT: [[R:%.*]] = select i1 [[COND]], <4 x i32> [[X:%.*]], <4 x i32> [[Y:%.*]]
|
|
; CHECK-NEXT: ret <4 x i32> [[R]]
|
|
;
|
|
%cond = extractelement <4 x i1> %condv, i32 3
|
|
call void @extra_use(i1 %cond)
|
|
%r = select i1 %cond, <4 x i32> %x, <4 x i32> %y
|
|
ret <4 x i32> %r
|
|
}
|
|
|
|
; Negative test
|
|
|
|
define <4 x i32> @extract_cond_variable_index(<4 x i32> %x, <4 x i32> %y, <4 x i1> %condv, i32 %index) {
|
|
; CHECK-LABEL: @extract_cond_variable_index(
|
|
; CHECK-NEXT: [[COND:%.*]] = extractelement <4 x i1> [[CONDV:%.*]], i32 [[INDEX:%.*]]
|
|
; CHECK-NEXT: [[R:%.*]] = select i1 [[COND]], <4 x i32> [[X:%.*]], <4 x i32> [[Y:%.*]]
|
|
; CHECK-NEXT: ret <4 x i32> [[R]]
|
|
;
|
|
%cond = extractelement <4 x i1> %condv, i32 %index
|
|
%r = select i1 %cond, <4 x i32> %x, <4 x i32> %y
|
|
ret <4 x i32> %r
|
|
}
|
|
|
|
; IR shuffle can alter the number of elements in the vector, so this is ok.
|
|
|
|
define <4 x i32> @extract_cond_type_mismatch(<4 x i32> %x, <4 x i32> %y, <5 x i1> %condv) {
|
|
; CHECK-LABEL: @extract_cond_type_mismatch(
|
|
; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <5 x i1> [[CONDV:%.*]], <5 x i1> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
|
|
; CHECK-NEXT: [[R:%.*]] = select <4 x i1> [[DOTSPLAT]], <4 x i32> [[X:%.*]], <4 x i32> [[Y:%.*]]
|
|
; CHECK-NEXT: ret <4 x i32> [[R]]
|
|
;
|
|
%cond = extractelement <5 x i1> %condv, i32 1
|
|
%r = select i1 %cond, <4 x i32> %x, <4 x i32> %y
|
|
ret <4 x i32> %r
|
|
}
|
|
|
|
|
|
attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
|