271 lines
7.5 KiB
LLVM
271 lines
7.5 KiB
LLVM
; RUN: llc -march=mipsel -pre-RA-sched=source < %s | FileCheck %s
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; All test functions do the same thing - they return the first variable
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; argument.
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; All CHECK's do the same thing - they check whether variable arguments from
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; registers are placed on correct stack locations, and whether the first
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; variable argument is returned from the correct stack location.
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declare void @llvm.va_start(i8*) nounwind
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declare void @llvm.va_end(i8*) nounwind
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; return int
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define i32 @va1(i32 %a, ...) nounwind {
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entry:
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%a.addr = alloca i32, align 4
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%ap = alloca i8*, align 4
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%b = alloca i32, align 4
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store i32 %a, i32* %a.addr, align 4
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%ap1 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap1)
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%0 = va_arg i8** %ap, i32
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store i32 %0, i32* %b, align 4
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%ap2 = bitcast i8** %ap to i8*
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call void @llvm.va_end(i8* %ap2)
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%tmp = load i32, i32* %b, align 4
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ret i32 %tmp
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; CHECK-LABEL: va1:
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; CHECK: addiu $sp, $sp, -16
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; CHECK: sw $5, 20($sp)
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; CHECK: sw $7, 28($sp)
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; CHECK: sw $6, 24($sp)
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; CHECK: lw $2, 20($sp)
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}
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; check whether the variable double argument will be accessed from the 8-byte
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; aligned location (i.e. whether the address is computed by adding 7 and
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; clearing lower 3 bits)
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define double @va2(i32 %a, ...) nounwind {
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entry:
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%a.addr = alloca i32, align 4
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%ap = alloca i8*, align 4
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%b = alloca double, align 8
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store i32 %a, i32* %a.addr, align 4
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%ap1 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap1)
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%0 = va_arg i8** %ap, double
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store double %0, double* %b, align 8
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%ap2 = bitcast i8** %ap to i8*
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call void @llvm.va_end(i8* %ap2)
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%tmp = load double, double* %b, align 8
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ret double %tmp
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; CHECK-LABEL: va2:
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; CHECK: addiu $sp, $sp, -16
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; CHECK: sw $7, 28($sp)
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; CHECK: sw $6, 24($sp)
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; CHECK: sw $5, 20($sp)
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; CHECK: addiu $[[R0:[0-9]+]], $sp, 20
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; CHECK: addiu $[[R1:[0-9]+]], $[[R0]], 7
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; CHECK: addiu $[[R2:[0-9]+]], $zero, -8
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; CHECK: and $[[R3:[0-9]+]], $[[R1]], $[[R2]]
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; CHECK: ldc1 $f0, 0($[[R3]])
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}
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; int
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define i32 @va3(double %a, ...) nounwind {
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entry:
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%a.addr = alloca double, align 8
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%ap = alloca i8*, align 4
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%b = alloca i32, align 4
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store double %a, double* %a.addr, align 8
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%ap1 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap1)
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%0 = va_arg i8** %ap, i32
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store i32 %0, i32* %b, align 4
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%ap2 = bitcast i8** %ap to i8*
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call void @llvm.va_end(i8* %ap2)
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%tmp = load i32, i32* %b, align 4
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ret i32 %tmp
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; CHECK-LABEL: va3:
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; CHECK: addiu $sp, $sp, -16
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; CHECK: sw $6, 24($sp)
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; CHECK: sw $7, 28($sp)
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; CHECK: lw $2, 24($sp)
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}
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; double
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define double @va4(double %a, ...) nounwind {
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entry:
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%a.addr = alloca double, align 8
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%ap = alloca i8*, align 4
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%b = alloca double, align 8
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store double %a, double* %a.addr, align 8
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%ap1 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap1)
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%0 = va_arg i8** %ap, double
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store double %0, double* %b, align 8
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%ap2 = bitcast i8** %ap to i8*
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call void @llvm.va_end(i8* %ap2)
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%tmp = load double, double* %b, align 8
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ret double %tmp
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; CHECK-LABEL: va4:
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; CHECK: addiu $sp, $sp, -24
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; CHECK: sw $7, 36($sp)
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; CHECK: sw $6, 32($sp)
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; CHECK: addiu ${{[0-9]+}}, $sp, 32
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; CHECK: ldc1 $f0, 32($sp)
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}
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; int
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define i32 @va5(i32 %a, i32 %b, i32 %c, ...) nounwind {
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entry:
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%a.addr = alloca i32, align 4
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%b.addr = alloca i32, align 4
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%c.addr = alloca i32, align 4
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%ap = alloca i8*, align 4
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%d = alloca i32, align 4
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store i32 %a, i32* %a.addr, align 4
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store i32 %b, i32* %b.addr, align 4
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store i32 %c, i32* %c.addr, align 4
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%ap1 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap1)
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%0 = va_arg i8** %ap, i32
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store i32 %0, i32* %d, align 4
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%ap2 = bitcast i8** %ap to i8*
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call void @llvm.va_end(i8* %ap2)
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%tmp = load i32, i32* %d, align 4
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ret i32 %tmp
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; CHECK-LABEL: va5:
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; CHECK: addiu $sp, $sp, -24
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; CHECK: sw $7, 36($sp)
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; CHECK: lw $2, 36($sp)
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}
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; double
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define double @va6(i32 %a, i32 %b, i32 %c, ...) nounwind {
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entry:
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%a.addr = alloca i32, align 4
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%b.addr = alloca i32, align 4
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%c.addr = alloca i32, align 4
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%ap = alloca i8*, align 4
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%d = alloca double, align 8
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store i32 %a, i32* %a.addr, align 4
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store i32 %b, i32* %b.addr, align 4
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store i32 %c, i32* %c.addr, align 4
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%ap1 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap1)
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%0 = va_arg i8** %ap, double
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store double %0, double* %d, align 8
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%ap2 = bitcast i8** %ap to i8*
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call void @llvm.va_end(i8* %ap2)
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%tmp = load double, double* %d, align 8
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ret double %tmp
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; CHECK-LABEL: va6:
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; CHECK: addiu $sp, $sp, -24
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; CHECK: sw $7, 36($sp)
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; CHECK: addiu $[[R0:[0-9]+]], $sp, 36
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; CHECK: addiu $[[R1:[0-9]+]], $[[R0]], 7
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; CHECK: addiu $[[R2:[0-9]+]], $zero, -8
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; CHECK: and $[[R3:[0-9]+]], $[[R1]], $[[R2]]
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; CHECK: ldc1 $f0, 0($[[R3]])
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}
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; int
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define i32 @va7(i32 %a, double %b, ...) nounwind {
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entry:
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%a.addr = alloca i32, align 4
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%b.addr = alloca double, align 8
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%ap = alloca i8*, align 4
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%c = alloca i32, align 4
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store i32 %a, i32* %a.addr, align 4
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store double %b, double* %b.addr, align 8
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%ap1 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap1)
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%0 = va_arg i8** %ap, i32
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store i32 %0, i32* %c, align 4
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%ap2 = bitcast i8** %ap to i8*
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call void @llvm.va_end(i8* %ap2)
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%tmp = load i32, i32* %c, align 4
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ret i32 %tmp
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; CHECK-LABEL: va7:
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; CHECK: addiu $sp, $sp, -24
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; CHECK: lw $2, 40($sp)
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}
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; double
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define double @va8(i32 %a, double %b, ...) nounwind {
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entry:
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%a.addr = alloca i32, align 4
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%b.addr = alloca double, align 8
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%ap = alloca i8*, align 4
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%c = alloca double, align 8
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store i32 %a, i32* %a.addr, align 4
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store double %b, double* %b.addr, align 8
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%ap1 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap1)
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%0 = va_arg i8** %ap, double
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store double %0, double* %c, align 8
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%ap2 = bitcast i8** %ap to i8*
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call void @llvm.va_end(i8* %ap2)
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%tmp = load double, double* %c, align 8
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ret double %tmp
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; CHECK-LABEL: va8:
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; CHECK: addiu $sp, $sp, -32
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; CHECK: addiu ${{[0-9]+}}, $sp, 48
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; CHECK: ldc1 $f0, 48($sp)
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}
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; int
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define i32 @va9(double %a, double %b, i32 %c, ...) nounwind {
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entry:
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%a.addr = alloca double, align 8
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%b.addr = alloca double, align 8
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%c.addr = alloca i32, align 4
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%ap = alloca i8*, align 4
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%d = alloca i32, align 4
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store double %a, double* %a.addr, align 8
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store double %b, double* %b.addr, align 8
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store i32 %c, i32* %c.addr, align 4
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%ap1 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap1)
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%0 = va_arg i8** %ap, i32
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store i32 %0, i32* %d, align 4
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%ap2 = bitcast i8** %ap to i8*
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call void @llvm.va_end(i8* %ap2)
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%tmp = load i32, i32* %d, align 4
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ret i32 %tmp
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; CHECK-LABEL: va9:
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; CHECK: addiu $sp, $sp, -24
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; CHECK: lw $2, 44($sp)
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}
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; double
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define double @va10(double %a, double %b, i32 %c, ...) nounwind {
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entry:
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%a.addr = alloca double, align 8
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%b.addr = alloca double, align 8
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%c.addr = alloca i32, align 4
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%ap = alloca i8*, align 4
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%d = alloca double, align 8
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store double %a, double* %a.addr, align 8
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store double %b, double* %b.addr, align 8
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store i32 %c, i32* %c.addr, align 4
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%ap1 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap1)
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%0 = va_arg i8** %ap, double
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store double %0, double* %d, align 8
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%ap2 = bitcast i8** %ap to i8*
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call void @llvm.va_end(i8* %ap2)
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%tmp = load double, double* %d, align 8
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ret double %tmp
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; CHECK-LABEL: va10:
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; CHECK: addiu $sp, $sp, -32
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; CHECK: addiu $[[R0:[0-9]+]], $sp, 52
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; CHECK: addiu $[[R1:[0-9]+]], $[[R0]], 7
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; CHECK: addiu $[[R2:[0-9]+]], $zero, -8
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; CHECK: and $[[R3:[0-9]+]], $[[R1]], $[[R2]]
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; CHECK: ldc1 $f0, 0($[[R3]])
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}
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