forked from OSchip/llvm-project
277 lines
7.4 KiB
LLVM
277 lines
7.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
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; RUN: opt -attributor --attributor-disable=false -attributor-annotate-decl-cs -S < %s | FileCheck %s
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; TODO: Add max-iteration check
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; Disable update test checks and enable it where required.
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; UTC_ARGS: --turn off
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; ModuleID = 'value-simplify.ll'
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source_filename = "value-simplify.ll"
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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declare void @f(i32)
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; Test1: Replace argument with constant
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define internal void @test1(i32 %a) {
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; CHECK: tail call void @f(i32 1)
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tail call void @f(i32 %a)
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ret void
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}
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define void @test1_helper() {
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tail call void @test1(i32 1)
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ret void
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}
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; TEST 2 : Simplify return value
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define i32 @return0() {
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ret i32 0
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}
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define i32 @return1() {
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ret i32 1
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}
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; CHECK: define i32 @test2_1(i1 %c)
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define i32 @test2_1(i1 %c) {
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br i1 %c, label %if.true, label %if.false
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if.true:
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%call = tail call i32 @return0()
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; FIXME: %ret0 should be replaced with i32 1.
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; CHECK: %ret0 = add i32 0, 1
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%ret0 = add i32 %call, 1
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br label %end
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if.false:
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%ret1 = tail call i32 @return1()
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br label %end
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end:
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; FIXME: %ret should be replaced with i32 1.
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; CHECK: %ret = phi i32 [ %ret0, %if.true ], [ 1, %if.false ]
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%ret = phi i32 [ %ret0, %if.true ], [ %ret1, %if.false ]
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; FIXME: ret i32 1
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; CHECK: ret i32 %ret
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ret i32 %ret
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}
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; CHECK: define i32 @test2_2(i1 %c)
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define i32 @test2_2(i1 %c) {
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; FIXME: %ret should be replaced with i32 1.
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%ret = tail call i32 @test2_1(i1 %c)
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; FIXME: ret i32 1
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; CHECK: ret i32 %ret
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ret i32 %ret
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}
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declare void @use(i32)
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; CHECK: define void @test3(i1 %c)
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define void @test3(i1 %c) {
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br i1 %c, label %if.true, label %if.false
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if.true:
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br label %end
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if.false:
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%ret1 = tail call i32 @return1()
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br label %end
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end:
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; CHECK: %r = phi i32 [ 1, %if.true ], [ 1, %if.false ]
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%r = phi i32 [ 1, %if.true ], [ %ret1, %if.false ]
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; CHECK: tail call void @use(i32 1)
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tail call void @use(i32 %r)
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ret void
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}
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define void @test-select-phi(i1 %c) {
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%select-same = select i1 %c, i32 1, i32 1
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; CHECK: tail call void @use(i32 1)
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tail call void @use(i32 %select-same)
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%select-not-same = select i1 %c, i32 1, i32 0
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; CHECK: tail call void @use(i32 %select-not-same)
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tail call void @use(i32 %select-not-same)
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br i1 %c, label %if-true, label %if-false
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if-true:
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br label %end
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if-false:
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br label %end
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end:
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%phi-same = phi i32 [ 1, %if-true ], [ 1, %if-false ]
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%phi-not-same = phi i32 [ 0, %if-true ], [ 1, %if-false ]
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%phi-same-prop = phi i32 [ 1, %if-true ], [ %select-same, %if-false ]
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%phi-same-undef = phi i32 [ 1, %if-true ], [ undef, %if-false ]
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%select-not-same-undef = select i1 %c, i32 %phi-not-same, i32 undef
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; CHECK: tail call void @use(i32 1)
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tail call void @use(i32 %phi-same)
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; CHECK: tail call void @use(i32 %phi-not-same)
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tail call void @use(i32 %phi-not-same)
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; CHECK: tail call void @use(i32 1)
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tail call void @use(i32 %phi-same-prop)
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; CHECK: tail call void @use(i32 1)
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tail call void @use(i32 %phi-same-undef)
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; CHECK: tail call void @use(i32 %select-not-same-undef)
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tail call void @use(i32 %select-not-same-undef)
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ret void
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}
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define i32 @ipccp1(i32 %a) {
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; CHECK-LABEL: define {{[^@]+}}@ipccp1
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; CHECK-SAME: (i32 returned [[A:%.*]]) #0
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; CHECK-NEXT: br i1 true, label [[T:%.*]], label [[F:%.*]]
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; CHECK: t:
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; CHECK-NEXT: ret i32 [[A:%.*]]
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; CHECK: f:
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; CHECK-NEXT: unreachable
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;
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br i1 true, label %t, label %f
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t:
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ret i32 %a
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f:
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%r = call i32 @ipccp1(i32 5)
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ret i32 %r
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}
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define internal i1 @ipccp2i(i1 %a) {
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; CHECK-LABEL: define {{[^@]+}}@ipccp2i
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; CHECK-SAME: (i1 returned [[A:%.*]]) #0
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; CHECK-NEXT: br i1 true, label [[T:%.*]], label [[F:%.*]]
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; CHECK: t:
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; CHECK-NEXT: ret i1 true
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; CHECK: f:
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; CHECK-NEXT: unreachable
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;
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br i1 %a, label %t, label %f
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t:
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ret i1 %a
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f:
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%r = call i1 @ipccp2i(i1 false)
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ret i1 %r
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}
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define i1 @ipccp2() {
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; CHECK-LABEL: define {{[^@]+}}@ipccp2() #1
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; CHECK-NEXT: [[R:%.*]] = call i1 @ipccp2i(i1 true) #0
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; CHECK-NEXT: ret i1 [[R]]
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;
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%r = call i1 @ipccp2i(i1 true)
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ret i1 %r
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}
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define internal i32 @ipccp3i(i32 %a) {
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; CHECK-LABEL: define {{[^@]+}}@ipccp3i
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; CHECK-SAME: (i32 [[A:%.*]]) #1
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; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[A:%.*]], 7
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; CHECK-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
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; CHECK: t:
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; CHECK-NEXT: ret i32 [[A]]
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; CHECK: f:
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; CHECK-NEXT: [[R:%.*]] = call i32 @ipccp3i(i32 5) #1
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; CHECK-NEXT: ret i32 [[R]]
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;
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%c = icmp eq i32 %a, 7
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br i1 %c, label %t, label %f
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t:
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ret i32 %a
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f:
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%r = call i32 @ipccp3i(i32 5)
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ret i32 %r
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}
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define i32 @ipccp3() {
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; CHECK-LABEL: define {{[^@]+}}@ipccp3() #1
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; CHECK-NEXT: [[R:%.*]] = call i32 @ipccp3i(i32 7) #1
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; CHECK-NEXT: ret i32 [[R]]
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;
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%r = call i32 @ipccp3i(i32 7)
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ret i32 %r
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}
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; UTC_ARGS: --turn on
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; Do not touch complicated arguments (for now)
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%struct.X = type { i8* }
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define internal i32* @test_inalloca(i32* inalloca %a) {
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; CHECK-LABEL: define {{[^@]+}}@test_inalloca
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; CHECK-SAME: (i32* inalloca noalias nofree returned writeonly [[A:%.*]])
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; CHECK-NEXT: ret i32* [[A]]
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;
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ret i32* %a
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}
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define i32* @complicated_args_inalloca() {
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; CHECK-LABEL: define {{[^@]+}}@complicated_args_inalloca()
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; CHECK-NEXT: [[CALL:%.*]] = call i32* @test_inalloca(i32* noalias nofree null)
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; CHECK-NEXT: ret i32* [[CALL]]
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;
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%call = call i32* @test_inalloca(i32* null)
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ret i32* %call
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}
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define internal void @test_sret(%struct.X* sret %a, %struct.X** %b) {
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; CHECK-LABEL: define {{[^@]+}}@test_sret
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; CHECK-SAME: (%struct.X* nofree sret writeonly [[A:%.*]], %struct.X** nocapture nofree nonnull writeonly dereferenceable(8) [[B:%.*]])
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; CHECK-NEXT: store %struct.X* [[A]], %struct.X** [[B]]
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; CHECK-NEXT: ret void
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;
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store %struct.X* %a, %struct.X** %b
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ret void
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}
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define void @complicated_args_sret(%struct.X** %b) {
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; CHECK-LABEL: define {{[^@]+}}@complicated_args_sret
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; CHECK-SAME: (%struct.X** nocapture nofree writeonly [[B:%.*]])
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; CHECK-NEXT: call void @test_sret(%struct.X* nofree null, %struct.X** nocapture nofree writeonly [[B]])
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; CHECK-NEXT: ret void
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;
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call void @test_sret(%struct.X* null, %struct.X** %b)
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ret void
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}
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define internal %struct.X* @test_nest(%struct.X* nest %a) {
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; CHECK-LABEL: define {{[^@]+}}@test_nest
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; CHECK-SAME: (%struct.X* nest noalias nofree readnone returned [[A:%.*]])
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; CHECK-NEXT: ret %struct.X* [[A]]
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;
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ret %struct.X* %a
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}
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define %struct.X* @complicated_args_nest() {
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; CHECK-LABEL: define {{[^@]+}}@complicated_args_nest()
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; CHECK-NEXT: [[CALL:%.*]] = call %struct.X* @test_nest(%struct.X* noalias nofree null)
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; CHECK-NEXT: ret %struct.X* [[CALL]]
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;
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%call = call %struct.X* @test_nest(%struct.X* null)
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ret %struct.X* %call
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}
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@S = external global %struct.X
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define internal void @test_byval(%struct.X* byval %a) {
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; CHECK-LABEL: define {{[^@]+}}@test_byval
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; CHECK-SAME: (%struct.X* nocapture nofree nonnull writeonly byval align 8 dereferenceable(8) [[A:%.*]])
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; CHECK-NEXT: [[G0:%.*]] = getelementptr [[STRUCT_X:%.*]], %struct.X* [[A]], i32 0, i32 0
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; CHECK-NEXT: store i8* null, i8** [[G0]], align 8
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; CHECK-NEXT: ret void
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;
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%g0 = getelementptr %struct.X, %struct.X* %a, i32 0, i32 0
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store i8* null, i8** %g0
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ret void
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}
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define void @complicated_args_byval() {
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; CHECK-LABEL: define {{[^@]+}}@complicated_args_byval()
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; CHECK-NEXT: call void @test_byval(%struct.X* nofree nonnull align 8 dereferenceable(8) @S)
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; CHECK-NEXT: ret void
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;
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call void @test_byval(%struct.X* @S)
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ret void
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}
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; UTC_ARGS: --turn off
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