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llvm-project/llvm/test/Transforms/ExpandVariadics/expand-va-intrinsic-split-simple.ll
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

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: -p --function-signature
; RUN: opt -mtriple=wasm32-unknown-unknown -S --passes=expand-variadics --expand-variadics-override=optimize < %s | FileCheck %s --check-prefixes=OPT
; RUN: opt -mtriple=wasm32-unknown-unknown -S --passes=expand-variadics --expand-variadics-override=lowering < %s | FileCheck %s --check-prefixes=ABI
; REQUIRES: webassembly-registered-target
; Examples are variadic functions that return the first or the second of an int and a double
; Split the functions into an internal equivalent that takes a va_list and a ABI preserving wrapper
define i32 @variadic_int_double_get_firstz(...) {
; OPT-LABEL: define {{[^@]+}}@variadic_int_double_get_firstz(...) {
; OPT-NEXT: entry:
; OPT-NEXT: %va_start = alloca ptr, align 4
; OPT-NEXT: call void @llvm.lifetime.start.p0(ptr %va_start)
; OPT-NEXT: call void @llvm.va_start.p0(ptr %va_start)
; OPT-NEXT: %0 = load ptr, ptr %va_start, align 4
; OPT-NEXT: %1 = call i32 @variadic_int_double_get_firstz.valist(ptr %0)
; OPT-NEXT: call void @llvm.lifetime.end.p0(ptr %va_start)
; OPT-NEXT: ret i32 %1
;
; ABI-LABEL: define {{[^@]+}}@variadic_int_double_get_firstz(ptr %varargs) {
; ABI-NEXT: entry:
; ABI-NEXT: %va = alloca ptr, align 4
; ABI-NEXT: store ptr %varargs, ptr %va, align 4
; ABI-NEXT: %argp.cur = load ptr, ptr %va, align 4
; ABI-NEXT: %argp.next = getelementptr inbounds i8, ptr %argp.cur, i32 4
; ABI-NEXT: store ptr %argp.next, ptr %va, align 4
; ABI-NEXT: %0 = load i32, ptr %argp.cur, align 4
; ABI-NEXT: ret i32 %0
;
entry:
%va = alloca ptr, align 4
call void @llvm.va_start.p0(ptr nonnull %va)
%argp.cur = load ptr, ptr %va, align 4
%argp.next = getelementptr inbounds i8, ptr %argp.cur, i32 4
store ptr %argp.next, ptr %va, align 4
%0 = load i32, ptr %argp.cur, align 4
call void @llvm.va_end.p0(ptr %va)
ret i32 %0
}
; CHECK-LABEL: define i32 @variadic_int_double_get_firstz(...) {
; CHECK-NEXT: entry:
; CHECK-NEXT: %va_list = alloca ptr, align 4
; CHECK-NEXT: call void @llvm.va_start.p0(ptr %va_list)
; CHECK-NEXT: %0 = tail call i32 @variadic_int_double_get_firstz.valist(ptr %va_list)
; CHECK-NEXT: ret i32 %0
; CHECK-NEXT: }
; CHECK-LABEL: define internal i32 @variadic_int_double_get_firstz.valist(ptr noalias %varargs) {
; CHECK-NEXT: entry:
; CHECK-NEXT: %va = alloca ptr, align 4
; CHECK-NEXT: store ptr %varargs, ptr %va, align 4
; CHECK-NEXT: %argp.cur = load ptr, ptr %va, align 4
; CHECK-NEXT: %argp.next = getelementptr inbounds i8, ptr %argp.cur, i32 4
; CHECK-NEXT: store ptr %argp.next, ptr %va, align 4
; CHECK-NEXT: %0 = load i32, ptr %argp.cur, align 4
; CHECK-NEXT: ret i32 %0
; CHECK-NEXT: }
define double @variadic_int_double_get_secondz(...) {
; OPT-LABEL: define {{[^@]+}}@variadic_int_double_get_secondz(...) {
; OPT-NEXT: entry:
; OPT-NEXT: %va_start = alloca ptr, align 4
; OPT-NEXT: call void @llvm.lifetime.start.p0(ptr %va_start)
; OPT-NEXT: call void @llvm.va_start.p0(ptr %va_start)
; OPT-NEXT: %0 = load ptr, ptr %va_start, align 4
; OPT-NEXT: %1 = call double @variadic_int_double_get_secondz.valist(ptr %0)
; OPT-NEXT: call void @llvm.lifetime.end.p0(ptr %va_start)
; OPT-NEXT: ret double %1
;
; ABI-LABEL: define {{[^@]+}}@variadic_int_double_get_secondz(ptr %varargs) {
; ABI-NEXT: entry:
; ABI-NEXT: %va = alloca ptr, align 4
; ABI-NEXT: store ptr %varargs, ptr %va, align 4
; ABI-NEXT: %argp.cur = load ptr, ptr %va, align 4
; ABI-NEXT: %argp.next = getelementptr inbounds i8, ptr %argp.cur, i32 4
; ABI-NEXT: %argp.next2 = getelementptr inbounds i8, ptr %argp.cur, i32 12
; ABI-NEXT: store ptr %argp.next2, ptr %va, align 4
; ABI-NEXT: %0 = load double, ptr %argp.next, align 4
; ABI-NEXT: ret double %0
;
entry:
%va = alloca ptr, align 4
call void @llvm.va_start.p0(ptr nonnull %va)
%argp.cur = load ptr, ptr %va, align 4
%argp.next = getelementptr inbounds i8, ptr %argp.cur, i32 4
%argp.next2 = getelementptr inbounds i8, ptr %argp.cur, i32 12
store ptr %argp.next2, ptr %va, align 4
%0 = load double, ptr %argp.next, align 4
call void @llvm.va_end.p0(ptr %va)
ret double %0
}
; CHECK-LABEL: define double @variadic_int_double_get_secondz(...) {
; CHECK-NEXT: entry:
; CHECK-NEXT: %va_list = alloca ptr, align 4
; CHECK-NEXT: call void @llvm.va_start.p0(ptr %va_list)
; CHECK-NEXT: %0 = tail call double @variadic_int_double_get_secondz.valist(ptr %va_list)
; CHECK-NEXT: ret double %0
; CHECK-NEXT: }
; CHECK-LABEL: define internal double @variadic_int_double_get_secondz.valist(ptr noalias %varargs) {
; CHECK-NEXT: entry:
; CHECK-NEXT: %va = alloca ptr, align 4
; CHECK-NEXT: store ptr %varargs, ptr %va, align 4
; CHECK-NEXT: %argp.cur = load ptr, ptr %va, align 4
; CHECK-NEXT: %argp.next = getelementptr inbounds i8, ptr %argp.cur, i32 4
; CHECK-NEXT: %argp.next2 = getelementptr inbounds i8, ptr %argp.cur, i32 12
; CHECK-NEXT: store ptr %argp.next2, ptr %va, align 4
; CHECK-NEXT: %0 = load double, ptr %argp.next, align 4
; CHECK-NEXT: ret double %0
; CHECK-NEXT: }
; CHECK-LABEL: @variadic_can_get_firstIidEEbT_T0_(i32 %x, double %y) {
; CHECK-NEXT: entry:
; CHECK-NEXT: %vararg_buffer = alloca %variadic_can_get_firstIidEEbT_T0_.vararg, align 16
; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr %vararg_buffer)
; CHECK-NEXT: %0 = getelementptr inbounds %variadic_can_get_firstIidEEbT_T0_.vararg, ptr %vararg_buffer, i32 0, i32 0
; CHECK-NEXT: store i32 %x, ptr %0, align 4
; CHECK-NEXT: %1 = getelementptr inbounds %variadic_can_get_firstIidEEbT_T0_.vararg, ptr %vararg_buffer, i32 0, i32 1
; CHECK-NEXT: store double %y, ptr %1, align 4
; CHECK-NEXT: %call = call i32 @variadic_int_double_get_firstz.valist(ptr %vararg_buffer)
; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr %vararg_buffer)
; CHECK-NEXT: %cmp.i = icmp eq i32 %call, %x
; CHECK-NEXT: ret i1 %cmp.i
; CHECK-NEXT: }
define zeroext i1 @variadic_can_get_firstIidEEbT_T0_(i32 %x, double %y) {
; OPT-LABEL: define {{[^@]+}}@variadic_can_get_firstIidEEbT_T0_(i32 %x, double %y) {
; OPT-NEXT: entry:
; OPT-NEXT: %vararg_buffer = alloca %variadic_can_get_firstIidEEbT_T0_.vararg, align 16
; OPT-NEXT: call void @llvm.lifetime.start.p0(ptr %vararg_buffer)
; OPT-NEXT: %0 = getelementptr inbounds nuw %variadic_can_get_firstIidEEbT_T0_.vararg, ptr %vararg_buffer, i32 0, i32 0
; OPT-NEXT: store i32 %x, ptr %0, align 4
; OPT-NEXT: %1 = getelementptr inbounds nuw %variadic_can_get_firstIidEEbT_T0_.vararg, ptr %vararg_buffer, i32 0, i32 2
; OPT-NEXT: store double %y, ptr %1, align 8
; OPT-NEXT: %call = call i32 @variadic_int_double_get_firstz.valist(ptr %vararg_buffer)
; OPT-NEXT: call void @llvm.lifetime.end.p0(ptr %vararg_buffer)
; OPT-NEXT: %cmp.i = icmp eq i32 %call, %x
; OPT-NEXT: ret i1 %cmp.i
;
; ABI-LABEL: define {{[^@]+}}@variadic_can_get_firstIidEEbT_T0_(i32 %x, double %y) {
; ABI-NEXT: entry:
; ABI-NEXT: %vararg_buffer = alloca %variadic_can_get_firstIidEEbT_T0_.vararg, align 16
; ABI-NEXT: call void @llvm.lifetime.start.p0(ptr %vararg_buffer)
; ABI-NEXT: %0 = getelementptr inbounds nuw %variadic_can_get_firstIidEEbT_T0_.vararg, ptr %vararg_buffer, i32 0, i32 0
; ABI-NEXT: store i32 %x, ptr %0, align 4
; ABI-NEXT: %1 = getelementptr inbounds nuw %variadic_can_get_firstIidEEbT_T0_.vararg, ptr %vararg_buffer, i32 0, i32 2
; ABI-NEXT: store double %y, ptr %1, align 8
; ABI-NEXT: %call = call i32 @variadic_int_double_get_firstz(ptr %vararg_buffer)
; ABI-NEXT: call void @llvm.lifetime.end.p0(ptr %vararg_buffer)
; ABI-NEXT: %cmp.i = icmp eq i32 %call, %x
; ABI-NEXT: ret i1 %cmp.i
;
entry:
%call = call i32 (...) @variadic_int_double_get_firstz(i32 %x, double %y)
%cmp.i = icmp eq i32 %call, %x
ret i1 %cmp.i
}
; CHECK-LABEL: @variadic_can_get_secondIidEEbT_T0_(i32 %x, double %y) {
; CHECK-NEXT: entry:
; CHECK-NEXT: %vararg_buffer = alloca %variadic_can_get_secondIidEEbT_T0_.vararg, align 16
; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr %vararg_buffer)
; CHECK-NEXT: %0 = getelementptr inbounds %variadic_can_get_secondIidEEbT_T0_.vararg, ptr %vararg_buffer, i32 0, i32 0
; CHECK-NEXT: store i32 %x, ptr %0, align 4
; CHECK-NEXT: %1 = getelementptr inbounds %variadic_can_get_secondIidEEbT_T0_.vararg, ptr %vararg_buffer, i32 0, i32 1
; CHECK-NEXT: store double %y, ptr %1, align 4
; CHECK-NEXT: %call = call double @variadic_int_double_get_secondz.valist(ptr %vararg_buffer)
; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr %vararg_buffer)
; CHECK-NEXT: %cmp.i = fcmp oeq double %call, %y
; CHECK-NEXT: ret i1 %cmp.i
; CHECK-NEXT: }
define zeroext i1 @variadic_can_get_secondIidEEbT_T0_(i32 %x, double %y) {
; OPT-LABEL: define {{[^@]+}}@variadic_can_get_secondIidEEbT_T0_(i32 %x, double %y) {
; OPT-NEXT: entry:
; OPT-NEXT: %vararg_buffer = alloca %variadic_can_get_secondIidEEbT_T0_.vararg, align 16
; OPT-NEXT: call void @llvm.lifetime.start.p0(ptr %vararg_buffer)
; OPT-NEXT: %0 = getelementptr inbounds nuw %variadic_can_get_secondIidEEbT_T0_.vararg, ptr %vararg_buffer, i32 0, i32 0
; OPT-NEXT: store i32 %x, ptr %0, align 4
; OPT-NEXT: %1 = getelementptr inbounds nuw %variadic_can_get_secondIidEEbT_T0_.vararg, ptr %vararg_buffer, i32 0, i32 2
; OPT-NEXT: store double %y, ptr %1, align 8
; OPT-NEXT: %call = call double @variadic_int_double_get_secondz.valist(ptr %vararg_buffer)
; OPT-NEXT: call void @llvm.lifetime.end.p0(ptr %vararg_buffer)
; OPT-NEXT: %cmp.i = fcmp oeq double %call, %y
; OPT-NEXT: ret i1 %cmp.i
;
; ABI-LABEL: define {{[^@]+}}@variadic_can_get_secondIidEEbT_T0_(i32 %x, double %y) {
; ABI-NEXT: entry:
; ABI-NEXT: %vararg_buffer = alloca %variadic_can_get_secondIidEEbT_T0_.vararg, align 16
; ABI-NEXT: call void @llvm.lifetime.start.p0(ptr %vararg_buffer)
; ABI-NEXT: %0 = getelementptr inbounds nuw %variadic_can_get_secondIidEEbT_T0_.vararg, ptr %vararg_buffer, i32 0, i32 0
; ABI-NEXT: store i32 %x, ptr %0, align 4
; ABI-NEXT: %1 = getelementptr inbounds nuw %variadic_can_get_secondIidEEbT_T0_.vararg, ptr %vararg_buffer, i32 0, i32 2
; ABI-NEXT: store double %y, ptr %1, align 8
; ABI-NEXT: %call = call double @variadic_int_double_get_secondz(ptr %vararg_buffer)
; ABI-NEXT: call void @llvm.lifetime.end.p0(ptr %vararg_buffer)
; ABI-NEXT: %cmp.i = fcmp oeq double %call, %y
; ABI-NEXT: ret i1 %cmp.i
;
entry:
%call = call double (...) @variadic_int_double_get_secondz(i32 %x, double %y)
%cmp.i = fcmp oeq double %call, %y
ret i1 %cmp.i
}
; Declaration unchanged
; CHECK: declare void @variadic_without_callers(...)
declare void @variadic_without_callers(...)
declare void @llvm.va_start.p0(ptr)
declare void @llvm.va_end.p0(ptr)
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