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llvm-project/llvm/test/Transforms/DeadStoreElimination/captures-before-call.ll

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes='dse' -S %s | FileCheck %s
target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
; Test case from PR50220.
define i32 @other_value_escapes_before_call() {
; CHECK-LABEL: @other_value_escapes_before_call(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[V1:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[V2:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 0, ptr [[V1]], align 4
; CHECK-NEXT: call void @escape(ptr nonnull [[V1]])
; CHECK-NEXT: [[CALL:%.*]] = call i32 @getval()
; CHECK-NEXT: store i32 [[CALL]], ptr [[V2]], align 4
; CHECK-NEXT: call void @escape(ptr nonnull [[V2]])
; CHECK-NEXT: [[LOAD_V2:%.*]] = load i32, ptr [[V2]], align 4
; CHECK-NEXT: [[LOAD_V1:%.*]] = load i32, ptr [[V1]], align 4
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[LOAD_V2]], [[LOAD_V1]]
; CHECK-NEXT: ret i32 [[ADD]]
;
entry:
%v1 = alloca i32, align 4
%v2 = alloca i32, align 4
store i32 0, ptr %v1, align 4
call void @escape(ptr nonnull %v1)
store i32 55555, ptr %v2, align 4
%call = call i32 @getval()
store i32 %call, ptr %v2, align 4
call void @escape(ptr nonnull %v2)
%load.v2 = load i32, ptr %v2, align 4
%load.v1 = load i32, ptr %v1, align 4
%add = add nsw i32 %load.v2, %load.v1
ret i32 %add
}
declare void @escape(ptr)
declare i32 @getval()
declare void @escape_and_clobber(ptr)
declare void @escape_writeonly(ptr) writeonly
declare void @clobber()
define i32 @test_not_captured_before_call_same_bb() {
; CHECK-LABEL: @test_not_captured_before_call_same_bb(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: ret i32 [[R]]
;
%a = alloca i32, align 4
store i32 55, ptr %a
%r = call i32 @getval()
store i32 99, ptr %a, align 4
call void @escape_and_clobber(ptr %a)
ret i32 %r
}
define i32 @test_not_captured_before_call_same_bb_escape_unreachable_block() {
; CHECK-LABEL: @test_not_captured_before_call_same_bb_escape_unreachable_block(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: ret i32 [[R]]
; CHECK: unreach:
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: ret i32 0
;
%a = alloca i32, align 4
store i32 55, ptr %a
%r = call i32 @getval()
store i32 99, ptr %a, align 4
call void @escape_and_clobber(ptr %a)
ret i32 %r
unreach:
call void @escape_and_clobber(ptr %a)
ret i32 0
}
define i32 @test_captured_and_clobbered_after_load_same_bb_2() {
; CHECK-LABEL: @test_captured_and_clobbered_after_load_same_bb_2(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, ptr [[A]], align 4
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[R]]
;
%a = alloca i32, align 4
store i32 55, ptr %a
%r = call i32 @getval()
call void @escape_and_clobber(ptr %a)
store i32 99, ptr %a, align 4
call void @clobber()
ret i32 %r
}
define i32 @test_captured_after_call_same_bb_2_clobbered_later() {
; CHECK-LABEL: @test_captured_after_call_same_bb_2_clobbered_later(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[R]]
;
%a = alloca i32, align 4
store i32 55, ptr %a
%r = call i32 @getval()
call void @escape_writeonly(ptr %a)
store i32 99, ptr %a, align 4
call void @clobber()
ret i32 %r
}
define i32 @test_captured_sibling_path_to_call_other_blocks_1(i1 %c.1) {
; CHECK-LABEL: @test_captured_sibling_path_to_call_other_blocks_1(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[R]], [[ELSE]] ]
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
%a = alloca i32, align 4
store i32 55, ptr %a
br i1 %c.1, label %then, label %else
then:
call void @escape_writeonly(ptr %a)
br label %exit
else:
%r = call i32 @getval()
br label %exit
exit:
%p = phi i32 [ 0, %then ], [ %r, %else ]
store i32 99, ptr %a, align 4
call void @clobber()
ret i32 %p
}
define i32 @test_captured_before_call_other_blocks_2(i1 %c.1) {
; CHECK-LABEL: @test_captured_before_call_other_blocks_2(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, ptr [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[R]], [[ELSE]] ]
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
%a = alloca i32, align 4
store i32 55, ptr %a
br i1 %c.1, label %then, label %else
then:
br label %exit
else:
call void @escape_and_clobber(ptr %a)
%r = call i32 @getval()
br label %exit
exit:
%p = phi i32 [ 0, %then ], [ %r, %else ]
store i32 99, ptr %a, align 4
call void @clobber()
ret i32 %p
}
define i32 @test_captured_before_call_other_blocks_4(i1 %c.1) {
; CHECK-LABEL: @test_captured_before_call_other_blocks_4(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, ptr [[A]], align 4
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[R]], [[ENTRY:%.*]] ]
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
entry:
%a = alloca i32, align 4
store i32 55, ptr %a
call void @escape_writeonly(ptr %a)
%r = call i32 @getval()
br i1 %c.1, label %then, label %exit
then:
call void @escape_writeonly(ptr %a)
br label %exit
exit:
%p = phi i32 [ 0, %then ], [ %r, %entry ]
store i32 99, ptr %a, align 4
call void @clobber()
ret i32 %p
}
define i32 @test_captured_before_call_other_blocks_5(i1 %c.1) {
; CHECK-LABEL: @test_captured_before_call_other_blocks_5(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, ptr [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[R]]
;
entry:
%a = alloca i32, align 4
store i32 55, ptr %a
br i1 %c.1, label %then, label %exit
then:
call void @escape_writeonly(ptr %a)
br label %exit
exit:
%r = call i32 @getval()
store i32 99, ptr %a, align 4
call void @clobber()
ret i32 %r
}
define i32 @test_captured_before_call_other_blocks_6(i1 %c.1) {
; CHECK-LABEL: @test_captured_before_call_other_blocks_6(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, ptr [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[R]]
;
entry:
%a = alloca i32, align 4
store i32 55, ptr %a
br i1 %c.1, label %then, label %exit
then:
call void @escape_writeonly(ptr %a)
br label %exit
exit:
%r = call i32 @getval()
store i32 99, ptr %a, align 4
call void @escape_writeonly(ptr %a)
call void @clobber()
ret i32 %r
}
define i32 @test_not_captured_before_call_other_blocks_1(i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_call_other_blocks_1(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: ret i32 [[R]]
;
%a = alloca i32, align 4
store i32 55, ptr %a
%r = call i32 @getval()
store i32 99, ptr %a, align 4
br i1 %c.1, label %then, label %else
then:
br label %exit
else:
br label %exit
exit:
call void @escape_and_clobber(ptr %a)
ret i32 %r
}
define i32 @test_not_captured_before_call_other_blocks_2(i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_call_other_blocks_2(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i32 [[R]]
;
%a = alloca i32, align 4
store i32 55, ptr %a
%r = call i32 @getval()
store i32 99, ptr %a, align 4
br i1 %c.1, label %then, label %else
then:
call void @escape_and_clobber(ptr %a)
br label %exit
else:
call void @escape_and_clobber(ptr %a)
br label %exit
exit:
ret i32 %r
}
define i32 @test_not_captured_before_call_other_blocks_3(i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_call_other_blocks_3(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i32 [[R]]
;
%a = alloca i32, align 4
store i32 55, ptr %a
%r = call i32 @getval()
store i32 99, ptr %a, align 4
br i1 %c.1, label %then, label %else
then:
call void @escape_and_clobber(ptr %a)
br label %exit
else:
br label %exit
exit:
ret i32 %r
}
define i32 @test_not_captured_before_call_other_blocks_4(i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_call_other_blocks_4(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[R]], [[ELSE]] ]
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
%a = alloca i32, align 4
store i32 55, ptr %a
br i1 %c.1, label %then, label %else
then:
br label %exit
else:
%r = call i32 @getval()
call void @escape_writeonly(ptr %a)
br label %exit
exit:
%p = phi i32 [ 0, %then ], [ %r, %else ]
store i32 99, ptr %a, align 4
call void @clobber()
ret i32 %p
}
define i32 @test_not_captured_before_call_other_blocks_5(i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_call_other_blocks_5(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
; CHECK: then:
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ [[R]], [[THEN]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
entry:
%a = alloca i32, align 4
store i32 55, ptr %a
br i1 %c.1, label %then, label %exit
then:
%r = call i32 @getval()
call void @escape_writeonly(ptr %a)
br label %exit
exit:
%p = phi i32 [ %r, %then ], [ 0, %entry ]
store i32 99, ptr %a, align 4
call void @clobber()
ret i32 %p
}
define i32 @test_not_captured_before_call_other_blocks_6(i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_call_other_blocks_6(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, ptr [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
; CHECK: then:
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ [[R]], [[THEN]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
entry:
%a = alloca i32, align 4
store i32 55, ptr %a
br i1 %c.1, label %then, label %exit
then:
%r = call i32 @getval()
call void @escape_writeonly(ptr %a)
br label %exit
exit:
%p = phi i32 [ %r, %then ], [ 0, %entry ]
store i32 99, ptr %a, align 4
call void @escape_writeonly(ptr %a)
call void @clobber()
ret i32 %p
}
define i32 @test_not_captured_before_call_other_blocks_7(i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_call_other_blocks_7(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[R]], [[ENTRY:%.*]] ]
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
entry:
%a = alloca i32, align 4
store i32 55, ptr %a
%r = call i32 @getval()
call void @escape_writeonly(ptr %a)
br i1 %c.1, label %then, label %exit
then:
call void @escape_writeonly(ptr %a)
br label %exit
exit:
%p = phi i32 [ 0, %then ], [ %r, %entry ]
store i32 99, ptr %a, align 4
call void @clobber()
ret i32 %p
}
define i32 @test_not_captured_before_call_same_bb_but_read() {
; CHECK-LABEL: @test_not_captured_before_call_same_bb_but_read(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, ptr [[A]], align 4
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: [[LV:%.*]] = load i32, ptr [[A]], align 4
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: [[RES:%.*]] = add i32 [[R]], [[LV]]
; CHECK-NEXT: ret i32 [[RES]]
;
%a = alloca i32, align 4
store i32 55, ptr %a
%r = call i32 @getval()
%lv = load i32, ptr %a
store i32 99, ptr %a, align 4
call void @escape_and_clobber(ptr %a)
%res = add i32 %r, %lv
ret i32 %res
}
define i32 @test_captured_after_loop(i1 %c.1) {
; CHECK-LABEL: @test_captured_after_loop(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: ret i32 [[R]]
;
%a = alloca i32, align 4
store i32 55, ptr %a
br label %loop
loop:
%r = call i32 @getval()
store i32 99, ptr %a, align 4
br i1 %c.1, label %loop, label %exit
exit:
call void @escape_and_clobber(ptr %a)
ret i32 %r
}
define i32 @test_captured_in_loop(i1 %c.1) {
; CHECK-LABEL: @test_captured_in_loop(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, ptr [[A]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[R:%.*]] = call i32 @getval()
; CHECK-NEXT: call void @escape_writeonly(ptr [[A]])
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: ret i32 [[R]]
;
%a = alloca i32, align 4
store i32 55, ptr %a
br label %loop
loop:
%r = call i32 @getval()
call void @escape_writeonly(ptr %a)
store i32 99, ptr %a, align 4
br i1 %c.1, label %loop, label %exit
exit:
call void @escape_and_clobber(ptr %a)
ret i32 %r
}
declare void @llvm.memcpy.p0.p0.i64(ptr, ptr, i64, i1)
define void @test_escaping_store_removed(ptr %src, ptr %escape) {
; CHECK-LABEL: @test_escaping_store_removed(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[A:%.*]] = alloca i64, align 8
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[A]], ptr [[SRC:%.*]], i64 8, i1 false)
; CHECK-NEXT: store ptr [[A]], ptr [[ESCAPE:%.*]], align 8
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: store i64 99, ptr [[A]], align 8
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret void
;
bb:
%a = alloca i64, align 8
store i64 0, ptr %a
call void @clobber()
call void @llvm.memcpy.p0.p0.i64(ptr %a, ptr %src, i64 8, i1 false)
store ptr %a, ptr %escape, align 8
store ptr %a, ptr %escape, align 8
call void @clobber()
store i64 99, ptr %a
call void @clobber()
ret void
}
define void @test_invoke_captures() personality ptr undef {
; CHECK-LABEL: @test_invoke_captures(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: invoke void @clobber()
; CHECK-NEXT: to label [[BB2:%.*]] unwind label [[BB5:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, ptr [[A]], align 8
; CHECK-NEXT: invoke void @escape(ptr [[A]])
; CHECK-NEXT: to label [[BB9:%.*]] unwind label [[BB10:%.*]]
; CHECK: bb4:
; CHECK-NEXT: ret void
; CHECK: bb5:
; CHECK-NEXT: [[LP_1:%.*]] = landingpad { ptr, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: ret void
; CHECK: bb9:
; CHECK-NEXT: ret void
; CHECK: bb10:
; CHECK-NEXT: [[LP_2:%.*]] = landingpad { ptr, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: unreachable
;
bb:
%a = alloca i32
store i32 99, ptr %a
invoke void @clobber()
to label %bb2 unwind label %bb5
bb2:
store i32 0, ptr %a, align 8
invoke void @escape(ptr %a)
to label %bb9 unwind label %bb10
bb4:
ret void
bb5:
%lp.1 = landingpad { ptr, i32 }
cleanup
ret void
bb9:
ret void
bb10:
%lp.2 = landingpad { ptr, i32 }
cleanup
unreachable
}
declare noalias ptr @alloc() nounwind
declare i32 @getval_nounwind() nounwind
define i32 @test_not_captured_before_load_same_bb_noalias_call() {
; CHECK-LABEL: @test_not_captured_before_load_same_bb_noalias_call(
; CHECK-NEXT: [[A:%.*]] = call ptr @alloc()
; CHECK-NEXT: [[R:%.*]] = call i32 @getval_nounwind()
; CHECK-NEXT: store i32 99, ptr [[A]], align 4
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: ret i32 [[R]]
;
%a = call ptr @alloc()
store i32 55, ptr %a
%r = call i32 @getval_nounwind()
store i32 99, ptr %a, align 4
call void @escape_and_clobber(ptr %a)
ret i32 %r
}
define i32 @test_not_captured_before_load_same_bb_noalias_arg(ptr noalias %a) {
; CHECK-LABEL: @test_not_captured_before_load_same_bb_noalias_arg(
; CHECK-NEXT: [[R:%.*]] = call i32 @getval_nounwind()
; CHECK-NEXT: store i32 99, ptr [[A:%.*]], align 4
; CHECK-NEXT: call void @escape_and_clobber(ptr [[A]])
; CHECK-NEXT: ret i32 [[R]]
;
store i32 55, ptr %a
%r = call i32 @getval_nounwind()
store i32 99, ptr %a, align 4
call void @escape_and_clobber(ptr %a)
ret i32 %r
}
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