arm64-windows-calls.ll
3.03 KB
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; FIXME: Add tests for global-isel/fast-isel.
; RUN: llc < %s -mtriple=arm64-windows | FileCheck %s
; Returns <= 8 bytes should be in X0.
%struct.S1 = type { i32, i32 }
define dso_local i64 @"?f1"() {
entry:
; CHECK-LABEL: f1
; CHECK: str xzr, [sp, #8]
; CHECK: mov x0, xzr
%retval = alloca %struct.S1, align 4
%a = getelementptr inbounds %struct.S1, %struct.S1* %retval, i32 0, i32 0
store i32 0, i32* %a, align 4
%b = getelementptr inbounds %struct.S1, %struct.S1* %retval, i32 0, i32 1
store i32 0, i32* %b, align 4
%0 = bitcast %struct.S1* %retval to i64*
%1 = load i64, i64* %0, align 4
ret i64 %1
}
; Returns <= 16 bytes should be in X0/X1.
%struct.S2 = type { i32, i32, i32, i32 }
define dso_local [2 x i64] @"?f2"() {
entry:
; CHECK-LABEL: f2
; CHECK: stp xzr, xzr, [sp], #16
; CHECK: mov x0, xzr
; CHECK: mov x1, xzr
%retval = alloca %struct.S2, align 4
%a = getelementptr inbounds %struct.S2, %struct.S2* %retval, i32 0, i32 0
store i32 0, i32* %a, align 4
%b = getelementptr inbounds %struct.S2, %struct.S2* %retval, i32 0, i32 1
store i32 0, i32* %b, align 4
%c = getelementptr inbounds %struct.S2, %struct.S2* %retval, i32 0, i32 2
store i32 0, i32* %c, align 4
%d = getelementptr inbounds %struct.S2, %struct.S2* %retval, i32 0, i32 3
store i32 0, i32* %d, align 4
%0 = bitcast %struct.S2* %retval to [2 x i64]*
%1 = load [2 x i64], [2 x i64]* %0, align 4
ret [2 x i64] %1
}
; Arguments > 16 bytes should be passed in X8.
%struct.S3 = type { i32, i32, i32, i32, i32 }
define dso_local void @"?f3"(%struct.S3* noalias sret %agg.result) {
entry:
; CHECK-LABEL: f3
; CHECK: stp xzr, xzr, [x8]
; CHECK: str wzr, [x8, #16]
%a = getelementptr inbounds %struct.S3, %struct.S3* %agg.result, i32 0, i32 0
store i32 0, i32* %a, align 4
%b = getelementptr inbounds %struct.S3, %struct.S3* %agg.result, i32 0, i32 1
store i32 0, i32* %b, align 4
%c = getelementptr inbounds %struct.S3, %struct.S3* %agg.result, i32 0, i32 2
store i32 0, i32* %c, align 4
%d = getelementptr inbounds %struct.S3, %struct.S3* %agg.result, i32 0, i32 3
store i32 0, i32* %d, align 4
%e = getelementptr inbounds %struct.S3, %struct.S3* %agg.result, i32 0, i32 4
store i32 0, i32* %e, align 4
ret void
}
; InReg arguments to non-instance methods must be passed in X0 and returns in
; X0.
%class.B = type { i32 }
define dso_local void @"?f4"(%class.B* inreg noalias nocapture sret %agg.result) {
entry:
; CHECK-LABEL: f4
; CHECK: mov w8, #1
; CHECK: str w8, [x0]
%X.i = getelementptr inbounds %class.B, %class.B* %agg.result, i64 0, i32 0
store i32 1, i32* %X.i, align 4
ret void
}
; InReg arguments to instance methods must be passed in X1 and returns in X0.
%class.C = type { i8 }
%class.A = type { i8 }
define dso_local void @"?inst@C"(%class.C* %this, %class.A* inreg noalias sret %agg.result) {
entry:
; CHECK-LABEL: inst@C
; CHECK: str x0, [sp, #8]
; CHECK: mov x0, x1
%this.addr = alloca %class.C*, align 8
store %class.C* %this, %class.C** %this.addr, align 8
%this1 = load %class.C*, %class.C** %this.addr, align 8
ret void
}