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Printing floating point number in decimal is inconvenient for humans. Verbose asm output will print out floating point values in comments, it helps. But in lots of cases, users still need additional work to covert the decimal back to hex or binary to check the bit patterns, especially when there are small precision difference. Hexadecimal form is one of the supported form in LLVM IR, and easier for debugging. This patch try to print all FP constant in hex form instead. Reviewed By: RKSimon Differential Revision: https://reviews.llvm.org/D73566
16 lines
428 B
LLVM
16 lines
428 B
LLVM
; Test loads of 64-bit floating-point constants that can be represented
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; as 32-bit constants.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CONST
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define double @f1() {
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; CHECK-LABEL: f1:
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; CHECK: larl [[REGISTER:%r[1-5]]], {{.*}}
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; CHECK: ldeb %f0, 0([[REGISTER]])
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; CHECK: br %r14
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;
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; CONST: .long 0x3f800001
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ret double 0x3ff0000020000000
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}
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