forked from OSchip/llvm-project
387 lines
10 KiB
LLVM
387 lines
10 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: --disable
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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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%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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; 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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; CHECK: ret i32 1
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ret i32 1
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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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%ret = tail call i32 @test2_1(i1 %c)
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; CHECK: ret i32 1
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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:%.*]])
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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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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()
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; CHECK-NEXT: ret i1 true
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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 i1 @ipccp2ib(i1 %a) {
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br i1 %a, label %t, label %f
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t:
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ret i1 true
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f:
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%r = call i1 @ipccp2ib(i1 false)
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ret i1 %r
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}
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define i1 @ipccp2b() {
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; CHECK-LABEL: define {{[^@]+}}@ipccp2b()
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; CHECK-NEXT: ret i1 true
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;
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%r = call i1 @ipccp2ib(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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%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()
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; CHECK-NEXT: ret i32 7
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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: --enable
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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 align 536870912 [[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 writeonly align 536870912 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* noalias nofree sret writeonly align 536870912 [[A:%.*]], %struct.X** nocapture nofree nonnull writeonly align 8 dereferenceable(8) [[B:%.*]])
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; CHECK-NEXT: store %struct.X* [[A]], %struct.X** [[B]], align 8
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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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; FIXME: Alignment and dereferenceability are not propagated to the argument
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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* noalias nofree writeonly align 536870912 null, %struct.X** nocapture nofree writeonly align 8 [[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 align 536870912 [[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 readnone align 536870912 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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%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: 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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define internal i8*@test_byval2(%struct.X* byval %a) {
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; CHECK-LABEL: define {{[^@]+}}@test_byval2()
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; CHECK-NEXT: [[G0:%.*]] = getelementptr [[STRUCT_X:%.*]], %struct.X* @S, i32 0, i32 0
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; CHECK-NEXT: [[L:%.*]] = load i8*, i8** [[G0]], align 8
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; CHECK-NEXT: ret i8* [[L]]
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;
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%g0 = getelementptr %struct.X, %struct.X* %a, i32 0, i32 0
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%l = load i8*, i8** %g0
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ret i8* %l
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}
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define i8* @complicated_args_byval2() {
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; CHECK-LABEL: define {{[^@]+}}@complicated_args_byval2()
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; CHECK-NEXT: [[C:%.*]] = call i8* @test_byval2()
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; CHECK-NEXT: ret i8* [[C]]
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;
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%c = call i8* @test_byval2(%struct.X* @S)
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ret i8* %c
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}
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define void @fixpoint_changed(i32* %p) {
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; CHECK-LABEL: define {{[^@]+}}@fixpoint_changed
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; CHECK-SAME: (i32* nocapture nofree writeonly [[P:%.*]])
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_COND:%.*]]
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; CHECK: for.cond:
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; CHECK-NEXT: [[J_0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[SW_EPILOG:%.*]] ]
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[J_0]], 30
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; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: switch i32 [[J_0]], label [[SW_EPILOG]] [
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; CHECK-NEXT: i32 1, label [[SW_BB:%.*]]
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; CHECK-NEXT: ]
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; CHECK: sw.bb:
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; CHECK-NEXT: br label [[SW_EPILOG]]
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; CHECK: sw.epilog:
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; CHECK-NEXT: [[X_0:%.*]] = phi i32 [ 255, [[FOR_BODY]] ], [ 253, [[SW_BB]] ]
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; CHECK-NEXT: store i32 [[X_0]], i32* [[P]]
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; CHECK-NEXT: [[INC]] = add nsw i32 [[J_0]], 1
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; CHECK-NEXT: br label [[FOR_COND]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.cond
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for.cond:
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%j.0 = phi i32 [ 0, %entry ], [ %inc, %sw.epilog ]
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%cmp = icmp slt i32 %j.0, 30
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br i1 %cmp, label %for.body, label %for.end
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for.body:
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switch i32 %j.0, label %sw.epilog [
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i32 1, label %sw.bb
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]
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sw.bb:
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br label %sw.epilog
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sw.epilog:
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%x.0 = phi i32 [ 255, %for.body ], [ 253, %sw.bb ]
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store i32 %x.0, i32* %p
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%inc = add nsw i32 %j.0, 1
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br label %for.cond
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for.end:
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ret void
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}
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; Check we merge undef and a constant properly.
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; FIXME fold the addition and return the constant.
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define i8 @caller0() {
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; CHECK-LABEL: define {{[^@]+}}@caller0()
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; CHECK-NEXT: [[C:%.*]] = call i8 @callee()
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; CHECK-NEXT: ret i8 [[C]]
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;
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%c = call i8 @callee(i8 undef)
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ret i8 %c
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}
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define i8 @caller1() {
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; CHECK-LABEL: define {{[^@]+}}@caller1()
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; CHECK-NEXT: [[C:%.*]] = call i8 @callee()
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; CHECK-NEXT: ret i8 [[C]]
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;
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%c = call i8 @callee(i8 undef)
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ret i8 %c
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}
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define i8 @caller2() {
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; CHECK-LABEL: define {{[^@]+}}@caller2()
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; CHECK-NEXT: [[C:%.*]] = call i8 @callee()
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; CHECK-NEXT: ret i8 [[C]]
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;
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%c = call i8 @callee(i8 undef)
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ret i8 %c
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}
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define i8 @caller_middle() {
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; CHECK-LABEL: define {{[^@]+}}@caller_middle()
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; CHECK-NEXT: [[C:%.*]] = call i8 @callee()
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; CHECK-NEXT: ret i8 [[C]]
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;
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%c = call i8 @callee(i8 42)
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ret i8 %c
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}
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define i8 @caller3() {
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; CHECK-LABEL: define {{[^@]+}}@caller3()
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; CHECK-NEXT: [[C:%.*]] = call i8 @callee()
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; CHECK-NEXT: ret i8 [[C]]
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;
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%c = call i8 @callee(i8 undef)
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ret i8 %c
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}
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define i8 @caller4() {
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; CHECK-LABEL: define {{[^@]+}}@caller4()
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; CHECK-NEXT: [[C:%.*]] = call i8 @callee()
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; CHECK-NEXT: ret i8 [[C]]
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;
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%c = call i8 @callee(i8 undef)
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ret i8 %c
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}
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define internal i8 @callee(i8 %a) {
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; CHECK-LABEL: define {{[^@]+}}@callee()
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; CHECK-NEXT: [[C:%.*]] = add i8 42, 7
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; CHECK-NEXT: ret i8 [[C]]
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;
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%c = add i8 %a, 7
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ret i8 %c
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}
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; UTC_ARGS: --disable
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