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llvm-mirror/test/Transforms/RewriteStatepointsForGC/base-inference.ll
Philip Reames bedda2fc60 [rs4gc] don't force a conflict for a canonical broadcast 
A broadcast is a shufflevector where only one input is used. Because of the way we handle constants (undef is a constant), the canonical shuffle sees a meet of (some value) and (nullptr). Given this, every broadcast gets treated as a conflict and a new base pointer computation is added.

The other way to tackle this would be to change constant handling specifically for undefs, but this seems easier.

Differential Revision: https://reviews.llvm.org/D98315
2021-03-16 12:59:06 -07:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -rewrite-statepoints-for-gc -S 2>&1 | FileCheck %s
; RUN: opt < %s -passes=rewrite-statepoints-for-gc -S 2>&1 | FileCheck %s
; A collection of tests for exercising the base inference logic in the
; findBasePointers. That is, the logic which proves a potentially derived
; pointer is actually a base pointer itself.
define i8 addrspace(1)* @test(i8 addrspace(1)* %a) gc "statepoint-example" {
; CHECK-LABEL: @test(
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[A:%.*]]) ]
; CHECK-NEXT: [[A_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret i8 addrspace(1)* [[A_RELOCATED]]
;
call void @foo()
ret i8 addrspace(1)* %a
}
define i8 addrspace(1)* @test_select(i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2) gc "statepoint-example" {
; CHECK-LABEL: @test_select(
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[C:%.*]], i8 addrspace(1)* [[A1:%.*]], i8 addrspace(1)* [[A2:%.*]]
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[SEL]]) ]
; CHECK-NEXT: [[SEL_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret i8 addrspace(1)* [[SEL_RELOCATED]]
;
%sel = select i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2
call void @foo()
ret i8 addrspace(1)* %sel
}
define i8 addrspace(1)* @test_phi1(i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2) gc "statepoint-example" {
; CHECK-LABEL: @test_phi1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C:%.*]], label [[TAKEN:%.*]], label [[UNTAKEN:%.*]]
; CHECK: taken:
; CHECK-NEXT: br label [[MERGE:%.*]]
; CHECK: untaken:
; CHECK-NEXT: br label [[MERGE]]
; CHECK: merge:
; CHECK-NEXT: [[PHI:%.*]] = phi i8 addrspace(1)* [ [[A1:%.*]], [[TAKEN]] ], [ [[A2:%.*]], [[UNTAKEN]] ]
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[PHI]]) ]
; CHECK-NEXT: [[PHI_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret i8 addrspace(1)* [[PHI_RELOCATED]]
;
entry:
br i1 %c, label %taken, label %untaken
taken:
br label %merge
untaken:
br label %merge
merge:
%phi = phi i8 addrspace(1)* [%a1, %taken], [%a2, %untaken]
call void @foo()
ret i8 addrspace(1)* %phi
}
define i8 addrspace(1)* @test_phi_lcssa(i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2) gc "statepoint-example" {
; CHECK-LABEL: @test_phi_lcssa(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[MERGE:%.*]]
; CHECK: merge:
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[A1:%.*]]) ]
; CHECK-NEXT: [[A1_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret i8 addrspace(1)* [[A1_RELOCATED]]
;
entry:
br label %merge
merge:
%phi = phi i8 addrspace(1)* [%a1, %entry]
call void @foo()
ret i8 addrspace(1)* %phi
}
define i8 addrspace(1)* @test_loop1(i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2) gc "statepoint-example" {
; CHECK-LABEL: @test_loop1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[PHI:%.*]] = phi i8 addrspace(1)* [ [[A1:%.*]], [[ENTRY:%.*]] ], [ [[A2:%.*]], [[LOOP]] ]
; CHECK-NEXT: br i1 [[C:%.*]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[PHI]]) ]
; CHECK-NEXT: [[PHI_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret i8 addrspace(1)* [[PHI_RELOCATED]]
;
entry:
br label %loop
loop:
%phi = phi i8 addrspace(1)* [%a1, %entry], [%a2, %loop]
br i1 %c, label %exit, label %loop
exit:
%phi2 = phi i8 addrspace(1)* [%phi, %loop]
call void @foo()
ret i8 addrspace(1)* %phi2
}
define i8 addrspace(1)* @test_loop2(i1 %c, i8 addrspace(1)* %a1) gc "statepoint-example" {
; CHECK-LABEL: @test_loop2(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[PHI:%.*]] = phi i8 addrspace(1)* [ [[A1:%.*]], [[ENTRY:%.*]] ], [ [[O2:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[ADDR:%.*]] = bitcast i8 addrspace(1)* [[PHI]] to i8 addrspace(1)* addrspace(1)*
; CHECK-NEXT: [[O2]] = load i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[ADDR]], align 8
; CHECK-NEXT: br i1 [[C:%.*]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[PHI]]) ]
; CHECK-NEXT: [[PHI_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret i8 addrspace(1)* [[PHI_RELOCATED]]
;
entry:
br label %loop
loop:
%phi = phi i8 addrspace(1)* [%a1, %entry], [%o2, %loop]
%addr = bitcast i8 addrspace(1)* %phi to i8 addrspace(1)* addrspace(1)*
%o2 = load i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* %addr
br i1 %c, label %exit, label %loop
exit:
%phi2 = phi i8 addrspace(1)* [%phi, %loop]
call void @foo()
ret i8 addrspace(1)* %phi2
}
; %phi1 and phi2 are not base pointers, but they do have a single
; base pointer which is %a1
define i8 addrspace(1)* @test_loop3(i1 %c, i8 addrspace(1)* %a1) gc "statepoint-example" {
; CHECK-LABEL: @test_loop3(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[PHI:%.*]] = phi i8 addrspace(1)* [ [[A1:%.*]], [[ENTRY:%.*]] ], [ [[GEP:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[GEP]] = getelementptr i8, i8 addrspace(1)* [[PHI]], i64 16
; CHECK-NEXT: br i1 [[C:%.*]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[PHI]], i8 addrspace(1)* [[A1]]) ]
; CHECK-NEXT: [[PHI_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 0)
; CHECK-NEXT: [[A1_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 1)
; CHECK-NEXT: ret i8 addrspace(1)* [[PHI_RELOCATED]]
;
entry:
br label %loop
loop:
%phi = phi i8 addrspace(1)* [%a1, %entry], [%gep, %loop]
%gep = getelementptr i8, i8 addrspace(1)* %phi, i64 16
br i1 %c, label %exit, label %loop
exit:
%phi2 = phi i8 addrspace(1)* [%phi, %loop]
call void @foo()
ret i8 addrspace(1)* %phi2
}
define <2 x i8 addrspace(1)*> @test_vec_passthrough(<2 x i8 addrspace(1)*> %a) gc "statepoint-example" {
; CHECK-LABEL: @test_vec_passthrough(
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(<2 x i8 addrspace(1)*> [[A:%.*]]) ]
; CHECK-NEXT: [[A_RELOCATED:%.*]] = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret <2 x i8 addrspace(1)*> [[A_RELOCATED]]
;
call void @foo()
ret <2 x i8 addrspace(1)*> %a
}
define <2 x i8 addrspace(1)*> @test_insert(i8 addrspace(1)* %a) gc "statepoint-example" {
; CHECK-LABEL: @test_insert(
; CHECK-NEXT: [[VEC:%.*]] = insertelement <2 x i8 addrspace(1)*> zeroinitializer, i8 addrspace(1)* [[A:%.*]], i64 0
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(<2 x i8 addrspace(1)*> [[VEC]]) ]
; CHECK-NEXT: [[VEC_RELOCATED:%.*]] = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret <2 x i8 addrspace(1)*> [[VEC_RELOCATED]]
;
%vec = insertelement <2 x i8 addrspace(1)*> zeroinitializer, i8 addrspace(1)* %a, i64 0
call void @foo()
ret <2 x i8 addrspace(1)*> %vec
}
define i8 addrspace(1)* @test_extract(<2 x i8 addrspace(1)*> %a) gc "statepoint-example" {
; CHECK-LABEL: @test_extract(
; CHECK-NEXT: [[EE:%.*]] = extractelement <2 x i8 addrspace(1)*> [[A:%.*]], i64 0
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[EE]]) ]
; CHECK-NEXT: [[EE_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret i8 addrspace(1)* [[EE_RELOCATED]]
;
%ee = extractelement <2 x i8 addrspace(1)*> %a, i64 0
call void @foo()
ret i8 addrspace(1)* %ee
}
define <2 x i8 addrspace(1)*> @test_shuffle(<2 x i8 addrspace(1)*> %a1) gc "statepoint-example" {
; CHECK-LABEL: @test_shuffle(
; CHECK-NEXT: [[RES:%.*]] = shufflevector <2 x i8 addrspace(1)*> [[A1:%.*]], <2 x i8 addrspace(1)*> [[A1]], <2 x i32> zeroinitializer
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(<2 x i8 addrspace(1)*> [[RES]]) ]
; CHECK-NEXT: [[RES_RELOCATED:%.*]] = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret <2 x i8 addrspace(1)*> [[RES_RELOCATED]]
;
%res = shufflevector <2 x i8 addrspace(1)*> %a1, <2 x i8 addrspace(1)*> %a1, <2 x i32> zeroinitializer
call void @foo()
ret <2 x i8 addrspace(1)*> %res
}
define <2 x i8 addrspace(1)*> @test_shuffle2(<2 x i8 addrspace(1)*> %a1, <2 x i8 addrspace(1)*> %a2) gc "statepoint-example" {
; CHECK-LABEL: @test_shuffle2(
; CHECK-NEXT: [[RES:%.*]] = shufflevector <2 x i8 addrspace(1)*> [[A1:%.*]], <2 x i8 addrspace(1)*> [[A2:%.*]], <2 x i32> zeroinitializer
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(<2 x i8 addrspace(1)*> [[RES]]) ]
; CHECK-NEXT: [[RES_RELOCATED:%.*]] = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret <2 x i8 addrspace(1)*> [[RES_RELOCATED]]
;
%res = shufflevector <2 x i8 addrspace(1)*> %a1, <2 x i8 addrspace(1)*> %a2, <2 x i32> zeroinitializer
call void @foo()
ret <2 x i8 addrspace(1)*> %res
}
define <4 x i8 addrspace(1)*> @test_shuffle_concat(<2 x i8 addrspace(1)*> %a1, <2 x i8 addrspace(1)*> %a2) gc "statepoint-example" {
; CHECK-LABEL: @test_shuffle_concat(
; CHECK-NEXT: [[RES:%.*]] = shufflevector <2 x i8 addrspace(1)*> [[A1:%.*]], <2 x i8 addrspace(1)*> [[A2:%.*]], <4 x i32> <i32 0, i32 1, i32 2, i32 3>
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(<4 x i8 addrspace(1)*> [[RES]]) ]
; CHECK-NEXT: [[RES_RELOCATED:%.*]] = call coldcc <4 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v4p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret <4 x i8 addrspace(1)*> [[RES_RELOCATED]]
;
%res = shufflevector <2 x i8 addrspace(1)*> %a1, <2 x i8 addrspace(1)*> %a2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
call void @foo()
ret <4 x i8 addrspace(1)*> %res
}
; TODO: Special case worth handling - we interpret the shuffle as if we need
; to select the base pointers from either input when the mask is known.
define <2 x i8 addrspace(1)*> @test_shuffle_broadcast(i8 addrspace(1)* %a) gc "statepoint-example" {
; CHECK-LABEL: @test_shuffle_broadcast(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[IE:%.*]] = insertelement <2 x i8 addrspace(1)*> zeroinitializer, i8 addrspace(1)* [[A:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST:%.*]] = shufflevector <2 x i8 addrspace(1)*> [[IE]], <2 x i8 addrspace(1)*> undef, <2 x i32> zeroinitializer
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(<2 x i8 addrspace(1)*> [[BROADCAST]]) ]
; CHECK-NEXT: [[BROADCAST_RELOCATED:%.*]] = call coldcc <2 x i8 addrspace(1)*> @llvm.experimental.gc.relocate.v2p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: ret <2 x i8 addrspace(1)*> [[BROADCAST_RELOCATED]]
;
entry:
%ie = insertelement <2 x i8 addrspace(1)*> zeroinitializer, i8 addrspace(1)* %a, i64 0
%broadcast = shufflevector <2 x i8 addrspace(1)*> %ie, <2 x i8 addrspace(1)*> undef, <2 x i32> zeroinitializer
call void @foo()
ret <2 x i8 addrspace(1)*> %broadcast
}
; Show a case where only a portion of the sub-graph propagates base pointers.
define i8 @test_subgraph(i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2) gc "statepoint-example" {
; CHECK-LABEL: @test_subgraph(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[C:%.*]], i8 addrspace(1)* [[A1:%.*]], i8 addrspace(1)* [[A2:%.*]]
; CHECK-NEXT: br i1 [[C]], label [[TAKEN:%.*]], label [[MERGE:%.*]]
; CHECK: taken:
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, i8 addrspace(1)* [[SEL]], i64 8
; CHECK-NEXT: br label [[MERGE]]
; CHECK: merge:
; CHECK-NEXT: [[PHI:%.*]] = phi i8 addrspace(1)* [ [[GEP]], [[TAKEN]] ], [ [[SEL]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[PHI]], i8 addrspace(1)* [[SEL]]) ]
; CHECK-NEXT: [[PHI_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 0)
; CHECK-NEXT: [[SEL_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 1)
; CHECK-NEXT: [[RES:%.*]] = load i8, i8 addrspace(1)* [[PHI_RELOCATED]], align 1
; CHECK-NEXT: ret i8 [[RES]]
;
entry:
%sel = select i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2
br i1 %c, label %taken, label %merge
taken:
%gep = getelementptr i8, i8 addrspace(1)* %sel, i64 8
br label %merge
merge:
%phi = phi i8 addrspace(1)* [%gep, %taken], [%sel, %entry]
call void @foo()
%res = load i8, i8 addrspace(1)* %phi
ret i8 %res
}
; An example of a non-trivial subgraph computing base pointers.
define i8 @test_subgraph2(i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2) gc "statepoint-example" {
; CHECK-LABEL: @test_subgraph2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[C:%.*]], i8 addrspace(1)* [[A1:%.*]], i8 addrspace(1)* [[A2:%.*]]
; CHECK-NEXT: [[IE:%.*]] = insertelement <2 x i8 addrspace(1)*> zeroinitializer, i8 addrspace(1)* [[SEL]], i64 0
; CHECK-NEXT: [[BROADCAST:%.*]] = shufflevector <2 x i8 addrspace(1)*> [[IE]], <2 x i8 addrspace(1)*> [[IE]], <2 x i32> zeroinitializer
; CHECK-NEXT: [[EE:%.*]] = extractelement <2 x i8 addrspace(1)*> [[BROADCAST]], i32 1
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[EE]]) ]
; CHECK-NEXT: [[EE_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT: [[RES:%.*]] = load i8, i8 addrspace(1)* [[EE_RELOCATED]], align 1
; CHECK-NEXT: ret i8 [[RES]]
;
entry:
%sel = select i1 %c, i8 addrspace(1)* %a1, i8 addrspace(1)* %a2
%ie = insertelement <2 x i8 addrspace(1)*> zeroinitializer, i8 addrspace(1)* %sel, i64 0
%broadcast = shufflevector <2 x i8 addrspace(1)*> %ie, <2 x i8 addrspace(1)*> %ie, <2 x i32> zeroinitializer
%ee = extractelement <2 x i8 addrspace(1)*> %broadcast, i32 1
call void @foo()
%res = load i8, i8 addrspace(1)* %ee
ret i8 %res
}
declare void @foo()
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