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ae3a0be92e
integer and floating-point opcodes, introducing FAdd, FSub, and FMul. For now, the AsmParser, BitcodeReader, and IRBuilder all preserve backwards compatability, and the Core LLVM APIs preserve backwards compatibility for IR producers. Most front-ends won't need to change immediately. This implements the first step of the plan outlined here: http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72897 91177308-0d34-0410-b5e6-96231b3b80d8
34 lines
1.2 KiB
LLVM
34 lines
1.2 KiB
LLVM
; RUN: llvm-as < %s | llc -march=ppc32 -o - | not grep fixunstfsi
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define i64 @__fixunstfdi(ppc_fp128 %a) nounwind readnone {
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entry:
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%0 = fcmp olt ppc_fp128 %a, 0xM00000000000000000000000000000000 ; <i1> [#uses=1]
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br i1 %0, label %bb5, label %bb1
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bb1: ; preds = %entry
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%1 = fmul ppc_fp128 %a, 0xM3DF00000000000000000000000000000 ; <ppc_fp128> [#uses=1]
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%2 = fptoui ppc_fp128 %1 to i32 ; <i32> [#uses=1]
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%3 = zext i32 %2 to i64 ; <i64> [#uses=1]
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%4 = shl i64 %3, 32 ; <i64> [#uses=3]
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%5 = uitofp i64 %4 to ppc_fp128 ; <ppc_fp128> [#uses=1]
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%6 = fsub ppc_fp128 %a, %5 ; <ppc_fp128> [#uses=3]
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%7 = fcmp olt ppc_fp128 %6, 0xM00000000000000000000000000000000 ; <i1> [#uses=1]
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br i1 %7, label %bb2, label %bb3
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bb2: ; preds = %bb1
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%8 = fsub ppc_fp128 0xM80000000000000000000000000000000, %6 ; <ppc_fp128> [#uses=1]
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%9 = fptoui ppc_fp128 %8 to i32 ; <i32> [#uses=1]
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%10 = zext i32 %9 to i64 ; <i64> [#uses=1]
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%11 = sub i64 %4, %10 ; <i64> [#uses=1]
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ret i64 %11
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bb3: ; preds = %bb1
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%12 = fptoui ppc_fp128 %6 to i32 ; <i32> [#uses=1]
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%13 = zext i32 %12 to i64 ; <i64> [#uses=1]
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%14 = or i64 %13, %4 ; <i64> [#uses=1]
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ret i64 %14
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bb5: ; preds = %entry
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ret i64 0
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}
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