06c192d454
Upgrade of the IR text tests should be the only thing blocking making typed byval mandatory. Partially done through regex and partially manual.
67 lines
2.1 KiB
LLVM
67 lines
2.1 KiB
LLVM
; RUN: llc < %s -mtriple=armv7-none-linux-gnueabi | FileCheck %s
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; Test that we correctly use registers and align elements when using va_arg
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%struct_t = type { double, double, double }
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@static_val = constant %struct_t { double 1.0, double 2.0, double 3.0 }
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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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; CHECK-LABEL: test_byval_8_bytes_alignment:
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define void @test_byval_8_bytes_alignment(i32 %i, ...) {
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entry:
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; CHECK: sub sp, sp, #12
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; CHECK: sub sp, sp, #4
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; CHECK: add r0, sp, #4
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; CHECK: stmib sp, {r1, r2, r3}
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%g = alloca i8*
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%g1 = bitcast i8** %g to i8*
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call void @llvm.va_start(i8* %g1)
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; CHECK: add [[REG:(r[0-9]+)|(lr)]], {{(r[0-9]+)|(lr)}}, #7
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; CHECK: bic [[REG]], [[REG]], #7
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%0 = va_arg i8** %g, double
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call void @llvm.va_end(i8* %g1)
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ret void
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}
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; CHECK-LABEL: main:
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; CHECK: movw [[BASE:r[0-9]+]], :lower16:static_val
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; CHECK: movt [[BASE]], :upper16:static_val
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; ldm is not formed when the coalescer failed to coalesce everything.
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; CHECK: ldrd r2, [[TMP:r[0-9]+]], {{\[}}[[BASE]]{{\]}}
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; CHECK: movw r0, #555
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define i32 @main() {
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entry:
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call void (i32, ...) @test_byval_8_bytes_alignment(i32 555, %struct_t* byval(%struct_t) @static_val)
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ret i32 0
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}
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declare void @f(double);
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; CHECK-LABEL: test_byval_8_bytes_alignment_fixed_arg:
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; CHECK-NOT: str r1
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; CHECK-DAG: str r3, [sp, #12]
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; CHECK-DAG: str r2, [sp, #8]
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; CHECK-NOT: str r1
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define void @test_byval_8_bytes_alignment_fixed_arg(i32 %n1, %struct_t* byval(%struct_t) %val) nounwind {
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entry:
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%a = getelementptr inbounds %struct_t, %struct_t* %val, i32 0, i32 0
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%0 = load double, double* %a
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call void (double) @f(double %0)
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ret void
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}
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; CHECK-LABEL: main_fixed_arg:
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; CHECK: movw [[BASE:r[0-9]+]], :lower16:static_val
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; CHECK: movt [[BASE]], :upper16:static_val
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; ldm is not formed when the coalescer failed to coalesce everything.
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; CHECK: ldrd r2, [[TMP:r[0-9]+]], {{\[}}[[BASE]]{{\]}}
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; CHECK: movw r0, #555
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define i32 @main_fixed_arg() {
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entry:
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call void (i32, %struct_t*) @test_byval_8_bytes_alignment_fixed_arg(i32 555, %struct_t* byval(%struct_t) @static_val)
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ret i32 0
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}
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