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ac/nir_to_llvm: fix b2f for f64

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Fixes: d7e0d47b9d ("nir: Add a bunch of b2[if] optimizations")

Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Timothy Arceri 2018-11-02 13:33:52 +11:00
parent f821e80213
commit 9aa3c1915e
1 changed files with 12 additions and 3 deletions
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15
src/amd/common/ac_nir_to_llvm.c
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@ -311,9 +311,18 @@ static LLVMValueRef emit_uint_carry(struct ac_llvm_context *ctx,
}
static LLVMValueRef emit_b2f(struct ac_llvm_context *ctx,
LLVMValueRef src0)
LLVMValueRef src0,
unsigned bitsize)
{
return LLVMBuildAnd(ctx->builder, src0, LLVMBuildBitCast(ctx->builder, LLVMConstReal(ctx->f32, 1.0), ctx->i32, ""), "");
LLVMValueRef result = LLVMBuildAnd(ctx->builder, src0,
LLVMBuildBitCast(ctx->builder, LLVMConstReal(ctx->f32, 1.0), ctx->i32, ""),
"");
result = LLVMBuildBitCast(ctx->builder, result, ctx->f32, "");
if (bitsize == 32)
return result;
return LLVMBuildFPExt(ctx->builder, result, ctx->f64, "");
}
static LLVMValueRef emit_f2b(struct ac_llvm_context *ctx,
@ -932,7 +941,7 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
result = emit_uint_carry(&ctx->ac, "llvm.usub.with.overflow.i32", src[0], src[1]);
break;
case nir_op_b2f:
result = emit_b2f(&ctx->ac, src[0]);
result = emit_b2f(&ctx->ac, src[0], instr->dest.dest.ssa.bit_size);
break;
case nir_op_f2b:
result = emit_f2b(&ctx->ac, src[0]);