fa8dc36350
This patch fixes the crash caused by the pull request: https://github.com/llvm/llvm-project/pull/85592
169 lines
4.7 KiB
LLVM
169 lines
4.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt < %s -passes='function-attrs' -S | FileCheck %s
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@g_var = external global [0 x i8]
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define i32 @test_ret_constant() {
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; CHECK-LABEL: define noundef i32 @test_ret_constant(
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; CHECK-SAME: ) #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: ret i32 0
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;
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ret i32 0
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}
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define i32 @test_ret_poison() {
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; CHECK-LABEL: define i32 @test_ret_poison(
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; CHECK-SAME: ) #[[ATTR0]] {
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; CHECK-NEXT: ret i32 poison
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;
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ret i32 poison
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}
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define i32 @test_ret_undef() {
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; CHECK-LABEL: define i32 @test_ret_undef(
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; CHECK-SAME: ) #[[ATTR0]] {
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; CHECK-NEXT: ret i32 undef
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;
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ret i32 undef
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}
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define i32 @test_ret_param(i32 %x) {
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; CHECK-LABEL: define i32 @test_ret_param(
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; CHECK-SAME: i32 returned [[X:%.*]]) #[[ATTR0]] {
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; CHECK-NEXT: ret i32 [[X]]
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;
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ret i32 %x
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}
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define i32 @test_ret_noundef_param(i32 noundef %x) {
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; CHECK-LABEL: define noundef i32 @test_ret_noundef_param(
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; CHECK-SAME: i32 noundef returned [[X:%.*]]) #[[ATTR0]] {
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; CHECK-NEXT: ret i32 [[X]]
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;
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ret i32 %x
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}
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define i32 @test_ret_noundef_expr(i32 noundef %x) {
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; CHECK-LABEL: define noundef i32 @test_ret_noundef_expr(
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; CHECK-SAME: i32 noundef [[X:%.*]]) #[[ATTR0]] {
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; CHECK-NEXT: [[Y:%.*]] = add i32 [[X]], 1
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; CHECK-NEXT: ret i32 [[Y]]
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;
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%y = add i32 %x, 1
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ret i32 %y
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}
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define i32 @test_ret_create_poison_expr(i32 noundef %x) {
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; CHECK-LABEL: define i32 @test_ret_create_poison_expr(
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; CHECK-SAME: i32 noundef [[X:%.*]]) #[[ATTR0]] {
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; CHECK-NEXT: [[Y:%.*]] = add nsw i32 [[X]], 1
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; CHECK-NEXT: ret i32 [[Y]]
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;
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%y = add nsw i32 %x, 1
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ret i32 %y
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}
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define i32 @test_ret_freezed(i32 noundef %x) {
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; CHECK-LABEL: define noundef i32 @test_ret_freezed(
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; CHECK-SAME: i32 noundef [[X:%.*]]) #[[ATTR0]] {
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; CHECK-NEXT: [[Y:%.*]] = add nsw i32 [[X]], 1
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; CHECK-NEXT: [[Z:%.*]] = freeze i32 [[Y]]
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; CHECK-NEXT: ret i32 [[Z]]
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;
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%y = add nsw i32 %x, 1
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%z = freeze i32 %y
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ret i32 %z
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}
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define i32 @test_ret_control_flow(i32 noundef %x) {
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; CHECK-LABEL: define noundef i32 @test_ret_control_flow(
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; CHECK-SAME: i32 noundef [[X:%.*]]) #[[ATTR0]] {
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[X]], 0
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; CHECK-NEXT: br i1 [[COND]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: ret i32 2
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; CHECK: if.else:
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; CHECK-NEXT: [[RET:%.*]] = add i32 [[X]], 1
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%cond = icmp eq i32 %x, 0
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br i1 %cond, label %if.then, label %if.else
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if.then:
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ret i32 2
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if.else:
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%ret = add i32 %x, 1
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ret i32 %ret
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}
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define i32 @test_ret_control_flow_may_poison(i32 noundef %x) {
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; CHECK-LABEL: define i32 @test_ret_control_flow_may_poison(
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; CHECK-SAME: i32 noundef [[X:%.*]]) #[[ATTR0]] {
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[X]], 0
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; CHECK-NEXT: br i1 [[COND]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: ret i32 2
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; CHECK: if.else:
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; CHECK-NEXT: [[RET:%.*]] = add nsw i32 [[X]], 1
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%cond = icmp eq i32 %x, 0
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br i1 %cond, label %if.then, label %if.else
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if.then:
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ret i32 2
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if.else:
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%ret = add nsw i32 %x, 1
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ret i32 %ret
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}
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; TODO: use context-sensitive analysis
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define i32 @test_ret_control_flow_never_poison(i32 noundef %x) {
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; CHECK-LABEL: define i32 @test_ret_control_flow_never_poison(
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; CHECK-SAME: i32 noundef [[X:%.*]]) #[[ATTR0]] {
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[X]], 2147483647
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; CHECK-NEXT: br i1 [[COND]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: ret i32 2
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; CHECK: if.else:
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; CHECK-NEXT: [[RET:%.*]] = add nsw i32 [[X]], 1
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%cond = icmp eq i32 %x, 2147483647
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br i1 %cond, label %if.then, label %if.else
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if.then:
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ret i32 2
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if.else:
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%ret = add nsw i32 %x, 1
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ret i32 %ret
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}
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define i32 @test_noundef_prop() {
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; CHECK-LABEL: define noundef i32 @test_noundef_prop(
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; CHECK-SAME: ) #[[ATTR0]] {
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; CHECK-NEXT: [[RET:%.*]] = call i32 @test_ret_constant()
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%ret = call i32 @test_ret_constant()
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ret i32 %ret
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}
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; Don't deduce noundef for functions with sanitize_memory.
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define i32 @test_ret_constant_msan() sanitize_memory {
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; CHECK-LABEL: define i32 @test_ret_constant_msan(
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; CHECK-SAME: ) #[[ATTR1:[0-9]+]] {
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; CHECK-NEXT: ret i32 0
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;
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ret i32 0
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}
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define i64 @test_trunc_with_constexpr() {
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; CHECK-LABEL: define noundef i64 @test_trunc_with_constexpr(
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; CHECK-SAME: ) #[[ATTR0]] {
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; CHECK-NEXT: [[ADD:%.*]] = add i32 trunc (i64 sub (i64 0, i64 ptrtoint (ptr @g_var to i64)) to i32), 1
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; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[ADD]] to i64
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; CHECK-NEXT: ret i64 [[CONV]]
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;
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%add = add i32 trunc (i64 sub (i64 0, i64 ptrtoint (ptr @g_var to i64)) to i32), 1
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%conv = sext i32 %add to i64
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ret i64 %conv
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}
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