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llvm-mirror/test/CodeGen/AArch64/arm64-fp-imm.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

32 lines
739 B
LLVM

; RUN: llc < %s -mtriple=arm64-apple-darwin | FileCheck %s
; CHECK: literal8
; CHECK: .quad 0x400921fb54442d18
define double @foo() {
; CHECK: _foo:
; CHECK: adrp x[[REG:[0-9]+]], lCPI0_0@PAGE
; CHECK: ldr d0, [x[[REG]], lCPI0_0@PAGEOFF]
; CHECK-NEXT: ret
ret double 0x400921FB54442D18
}
define float @bar() {
; CHECK: _bar:
; CHECK: mov [[REG:w[0-9]+]], #4059
; CHECK: movk [[REG]], #16457, lsl #16
; CHECK: fmov s0, [[REG]]
; CHECK-NEXT: ret
ret float 0x400921FB60000000
}
; CHECK: literal16
; CHECK: .quad 0
; CHECK: .quad 0
define fp128 @baz() {
; CHECK: _baz:
; CHECK: adrp x[[REG:[0-9]+]], lCPI2_0@PAGE
; CHECK: ldr q0, [x[[REG]], lCPI2_0@PAGEOFF]
; CHECK-NEXT: ret
ret fp128 0xL00000000000000000000000000000000
}