Nikita Popov c23b4fbdbb
[IR] Remove size argument from lifetime intrinsics (#150248)
Now that #149310 has restricted lifetime intrinsics to only work on
allocas, we can also drop the explicit size argument. Instead, the size
is implied by the alloca.

This removes the ability to only mark a prefix of an alloca alive/dead.
We never used that capability, so we should remove the need to handle
that possibility everywhere (though many key places, including stack
coloring, did not actually respect this).
2025-08-08 11:09:34 +02:00

128 lines
4.7 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=verify,iroutliner -ir-outlining-no-cost < %s | FileCheck %s
; This test makes sure we are extracting the found similarity sections
; correctly at the call site.
define void @extract1() {
; CHECK-LABEL: @extract1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[B:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[C:%.*]] = alloca i32, align 4
; CHECK-NEXT: call void @outlined_ir_func_1(ptr [[A]], ptr [[B]], ptr [[C]])
; CHECK-NEXT: ret void
;
entry:
%a = alloca i32, align 4
%b = alloca i32, align 4
%c = alloca i32, align 4
store i32 2, ptr %a, align 4
store i32 3, ptr %b, align 4
store i32 4, ptr %c, align 4
%al = load i32, ptr %a
%bl = load i32, ptr %b
%cl = load i32, ptr %c
ret void
}
define void @extract2() {
; CHECK-LABEL: @extract2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[B:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[C:%.*]] = alloca i32, align 4
; CHECK-NEXT: call void @outlined_ir_func_1(ptr [[A]], ptr [[B]], ptr [[C]])
; CHECK-NEXT: ret void
;
entry:
%a = alloca i32, align 4
%b = alloca i32, align 4
%c = alloca i32, align 4
store i32 2, ptr %a, align 4
store i32 3, ptr %b, align 4
store i32 4, ptr %c, align 4
%al = load i32, ptr %a
%bl = load i32, ptr %b
%cl = load i32, ptr %c
ret void
}
; There are potential ouptuts in this sections, but we do not extract sections
; with outputs right now, since they cannot be consolidated.
define void @extract_outs1() #0 {
; CHECK-LABEL: @extract_outs1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTLOC:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[ADD_LOC:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[B:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[OUTPUT:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[RESULT:%.*]] = alloca i32, align 4
; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[ADD_LOC]])
; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[DOTLOC]])
; CHECK-NEXT: call void @outlined_ir_func_0(ptr [[A]], ptr [[B]], ptr [[OUTPUT]], ptr [[ADD_LOC]], ptr [[DOTLOC]])
; CHECK-NEXT: [[ADD_RELOAD:%.*]] = load i32, ptr [[ADD_LOC]], align 4
; CHECK-NEXT: [[DOTRELOAD:%.*]] = load i32, ptr [[DOTLOC]], align 4
; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[ADD_LOC]])
; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[DOTLOC]])
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[OUTPUT]], align 4
; CHECK-NEXT: call void @outlined_ir_func_2(i32 [[DOTRELOAD]], i32 [[ADD_RELOAD]], ptr [[RESULT]])
; CHECK-NEXT: ret void
;
entry:
%a = alloca i32, align 4
%b = alloca i32, align 4
%output = alloca i32, align 4
%result = alloca i32, align 4
store i32 2, ptr %a, align 4
store i32 3, ptr %b, align 4
%0 = load i32, ptr %a, align 4
%1 = load i32, ptr %b, align 4
%add = add i32 %0, %1
store i32 %add, ptr %output, align 4
%2 = load i32, ptr %output, align 4
%3 = load i32, ptr %output, align 4
%mul = mul i32 %2, %add
store i32 %mul, ptr %result, align 4
ret void
}
; There are potential ouptuts in this sections, but we do not extract sections
; with outputs right now, since they cannot be consolidated.
define void @extract_outs2() #0 {
; CHECK-LABEL: @extract_outs2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTLOC:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[ADD_LOC:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[B:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[OUTPUT:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[RESULT:%.*]] = alloca i32, align 4
; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[ADD_LOC]])
; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[DOTLOC]])
; CHECK-NEXT: call void @outlined_ir_func_0(ptr [[A]], ptr [[B]], ptr [[OUTPUT]], ptr [[ADD_LOC]], ptr [[DOTLOC]])
; CHECK-NEXT: [[ADD_RELOAD:%.*]] = load i32, ptr [[ADD_LOC]], align 4
; CHECK-NEXT: [[DOTRELOAD:%.*]] = load i32, ptr [[DOTLOC]], align 4
; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[ADD_LOC]])
; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[DOTLOC]])
; CHECK-NEXT: call void @outlined_ir_func_2(i32 [[DOTRELOAD]], i32 [[ADD_RELOAD]], ptr [[RESULT]])
; CHECK-NEXT: ret void
;
entry:
%a = alloca i32, align 4
%b = alloca i32, align 4
%output = alloca i32, align 4
%result = alloca i32, align 4
store i32 2, ptr %a, align 4
store i32 3, ptr %b, align 4
%0 = load i32, ptr %a, align 4
%1 = load i32, ptr %b, align 4
%add = add i32 %0, %1
store i32 %add, ptr %output, align 4
%2 = load i32, ptr %output, align 4
%mul = mul i32 %2, %add
store i32 %mul, ptr %result, align 4
ret void
}