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[NVPTX] Use ABI alignment for parameters when alignment is not specified.
Affects SM 2.0+. Fixes bug 13324. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167646 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1525,6 +1525,9 @@ void NVPTXAsmPrinter::emitFunctionParamList(const Function *F,
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// <a> = PAL.getparamalignment
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// size = typeallocsize of element type
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unsigned align = PAL.getParamAlignment(paramIndex+1);
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if (align == 0)
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align = TD->getABITypeAlignment(ETy);
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unsigned sz = TD->getTypeAllocSize(ETy);
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O << "\t.param .align " << align
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<< " .b8 ";
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25
test/CodeGen/NVPTX/param-align.ll
Normal file
25
test/CodeGen/NVPTX/param-align.ll
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@ -0,0 +1,25 @@
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; RUN: llc < %s -march=nvptx -mcpu=sm_20 | FileCheck %s
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;;; Need 4-byte alignment on float* passed byval
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define ptx_device void @t1(float* byval %x) {
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; CHECK: .func t1
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; CHECK: .param .align 4 .b8 t1_param_0[4]
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ret void
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}
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;;; Need 8-byte alignment on double* passed byval
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define ptx_device void @t2(double* byval %x) {
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; CHECK: .func t2
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; CHECK: .param .align 8 .b8 t2_param_0[8]
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ret void
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}
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;;; Need 4-byte alignment on float2* passed byval
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%struct.float2 = type { float, float }
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define ptx_device void @t3(%struct.float2* byval %x) {
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; CHECK: .func t3
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; CHECK: .param .align 4 .b8 t3_param_0[8]
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ret void
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}
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