c2f9885a8a
This adds support for marking arbitrary general purpose registers - except for those with special purpose (G0, I6-I7, O6-O7) - as reserved, as needed by some software like the Linux kernel.
26 lines
1.2 KiB
LLVM
26 lines
1.2 KiB
LLVM
;; Test reserving argument registers.
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; RUN: not llc < %s -mtriple=sparc-linux-gnu -mattr=+reserve-o0 2>&1 | FileCheck %s --check-prefixes=CHECK-RESERVED-O0
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; RUN: not llc < %s -mtriple=sparc64-linux-gnu -mattr=+reserve-o0 2>&1 | FileCheck %s --check-prefixes=CHECK-RESERVED-O0
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; RUN: not llc < %s -mtriple=sparc-linux-gnu -mattr=+reserve-i0 2>&1 | FileCheck %s --check-prefixes=CHECK-RESERVED-I0
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; RUN: not llc < %s -mtriple=sparc64-linux-gnu -mattr=+reserve-i0 2>&1 | FileCheck %s --check-prefixes=CHECK-RESERVED-I0
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; CHECK-RESERVED-O0: error:
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; CHECK-RESERVED-O0-SAME: SPARC doesn't support function calls if any of the argument registers is reserved.
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; CHECK-RESERVED-I0: error:
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; CHECK-RESERVED-I0-SAME: SPARC doesn't support function calls if any of the argument registers is reserved.
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define void @call_function() {
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call void @foo()
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ret void
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}
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declare void @foo()
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; CHECK-RESERVED-O0: error:
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; CHECK-RESERVED-O0-SAME: SPARC doesn't support function calls if any of the argument registers is reserved.
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; CHECK-RESERVED-I0: error:
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; CHECK-RESERVED-I0-SAME: SPARC doesn't support function calls if any of the argument registers is reserved.
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define void @call_function_with_arg(i8 %in) {
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call void @bar(i8 %in)
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ret void
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}
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declare void @bar(i8)
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