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[NVPTX] Fix i1 kernel parameters and global variables. ABI rules say we need to use .u8 for i1 parameters for kernels.

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llvm-svn: 182253
This commit is contained in:
Justin Holewinski 2013-05-20 12:13:28 +00:00
parent adb91e7ed9
commit fda22b94b1
3 changed files with 49 additions and 2 deletions
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14
lib/Target/NVPTX/NVPTXAsmPrinter.cpp
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@ -1199,7 +1199,11 @@ void NVPTXAsmPrinter::printModuleLevelGV(GlobalVariable *GVar, raw_ostream &O,
if (ETy->isPrimitiveType() || ETy->isIntegerTy() || isa<PointerType>(ETy)) {
O << " .";
O << getPTXFundamentalTypeStr(ETy, false);
// Special case: ABI requires that we use .u8 for predicates
if (ETy->isIntegerTy(1))
O << "u8";
else
O << getPTXFundamentalTypeStr(ETy, false);
O << " ";
O << *Mang->getSymbol(GVar);
@ -1564,7 +1568,13 @@ void NVPTXAsmPrinter::emitFunctionParamList(const Function *F, raw_ostream &O) {
}
// non-pointer scalar to kernel func
O << "\t.param ." << getPTXFundamentalTypeStr(Ty) << " ";
O << "\t.param .";
// Special case: predicate operands become .u8 types
if (Ty->isIntegerTy(1))
O << "u8";
else
O << getPTXFundamentalTypeStr(Ty);
O << " ";
printParamName(I, paramIndex, O);
continue;
}

19
test/CodeGen/NVPTX/i1-global.ll Normal file
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@ -0,0 +1,19 @@
; RUN: llc < %s -march=nvptx -mcpu=sm_20 -drvcuda | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v16:16:16-v32:32:32-v64:64:64-v128:128:128-n16:32:64"
; CHECK: .visible .global .align 1 .u8 mypred
@mypred = addrspace(1) global i1 true, align 1
define void @foo(i1 %p, i32* %out) {
%ld = load i1 addrspace(1)* @mypred
%val = zext i1 %ld to i32
store i32 %val, i32* %out
ret void
}
!nvvm.annotations = !{!0}
!0 = metadata !{void (i1, i32*)* @foo, metadata !"kernel", i32 1}

18
test/CodeGen/NVPTX/i1-param.ll Normal file
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@ -0,0 +1,18 @@
; RUN: llc < %s -march=nvptx -mcpu=sm_20 -drvcuda | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v16:16:16-v32:32:32-v64:64:64-v128:128:128-n16:32:64"
; Make sure predicate (i1) operands to kernels get expanded out to .u8
; CHECK: .entry foo
; CHECK: .param .u8 foo_param_0
; CHECK: .param .u32 foo_param_1
define void @foo(i1 %p, i32* %out) {
%val = zext i1 %p to i32
store i32 %val, i32* %out
ret void
}
!nvvm.annotations = !{!0}
!0 = metadata !{void (i1, i32*)* @foo, metadata !"kernel", i32 1}