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llvm-mirror/test/CodeGen/SystemZ/fp-const-08.ll
Jinsong Ji 7ed143a4a1 [AsmPrinter] Print FP constant in hexadecimal form instead
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
2020-02-07 16:00:55 +00:00

22 lines
677 B
LLVM

; Test loads of 128-bit floating-point constants. This value would actually
; fit within the x86 80-bit format, so the test make sure we don't try to
; extend from an f80.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CONST
define void @f1(fp128 *%x) {
; CHECK-LABEL: f1:
; CHECK: larl [[REGISTER:%r[1-5]+]], {{.*}}
; CHECK: ld %f0, 0([[REGISTER]])
; CHECK: ld %f2, 8([[REGISTER]])
; CHECK: std %f0, 0(%r2)
; CHECK: std %f2, 8(%r2)
; CHECK: br %r14
;
; CONST: .quad 0x3fff000000000000
; CONST: .quad 0x0800000000000000
store fp128 0xL08000000000000003fff000000000000, fp128 *%x
ret void
}