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7ed143a4a1
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
71 lines
1.8 KiB
LLVM
71 lines
1.8 KiB
LLVM
; Test loads of f128 floating-point constants on z14.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s -check-prefix=CONST
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; Test loading zero.
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define void @f1(fp128 *%x) {
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; CHECK-LABEL: f1:
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; CHECK: vzero [[REG:%v[0-9]+]]
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; CHECK: vst [[REG]], 0(%r2)
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; CHECK: br %r14
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store fp128 0xL00000000000000000000000000000000, fp128 *%x
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ret void
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}
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; Test loading of negative floating-point zero.
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define void @f2(fp128 *%x) {
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; CHECK-LABEL: f2:
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; CHECK: vzero [[REG:%v[0-9]+]]
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; CHECK: wflnxb [[REG]], [[REG]]
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; CHECK: vst [[REG]], 0(%r2)
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; CHECK: br %r14
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store fp128 0xL00000000000000008000000000000000, fp128 *%x
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ret void
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}
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; Test loading of a 128-bit floating-point constant. This value would
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; actually fit within the 32-bit format, but we don't have extending
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; loads into vector registers.
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define void @f3(fp128 *%x) {
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; CHECK-LABEL: f3:
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; CHECK: larl [[REGISTER:%r[1-5]+]], {{.*}}
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; CHECK: vl [[REG:%v[0-9]+]], 0([[REGISTER]])
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; CHECK: vst [[REG]], 0(%r2)
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; CHECK: br %r14
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; CONST: .quad 0x3fff000002000000
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; CONST: .quad 0x0
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store fp128 0xL00000000000000003fff000002000000, fp128 *%x
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ret void
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}
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; Test that VGBM works.
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define void @f4(fp128 *%x) {
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; CHECK-LABEL: f4:
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; CHECK: vgbm %v0, 21845
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; CHECK-NEXT: vst %v0, 0(%r2)
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; CHECK-NEXT: br %r14
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store fp128 0xL00ff00ff00ff00ff00ff00ff00ff00ff, fp128 *%x
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ret void
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}
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; Test that VREPI works.
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define void @f5(fp128 *%x) {
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; CHECK-LABEL: f5:
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; CHECK: vrepib %v0, -8
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; CHECK-NEXT: vst %v0, 0(%r2)
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; CHECK-NEXT: br %r14
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store fp128 0xLf8f8f8f8f8f8f8f8f8f8f8f8f8f8f8f8, fp128 *%x
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ret void
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}
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; Test that VGM works.
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define void @f6(fp128 *%x) {
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; CHECK-LABEL: f6:
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; CHECK: vgmg %v0, 12, 31
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; CHECK-NEXT: vst %v0, 0(%r2)
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; CHECK-NEXT: br %r14
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store fp128 0xL000fffff00000000000fffff00000000, fp128 *%x
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ret void
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}
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