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llvm-mirror/test/CodeGen/Thumb2/aligned-constants.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

27 lines
864 B
LLVM

; RUN: llc < %s -mcpu=cortex-a8 | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
target triple = "thumbv7-apple-ios"
; The double in the constant pool is 8-byte aligned, forcing the function
; alignment.
; CHECK: .p2align 3
; CHECK: func
;
; Constant pool with 8-byte entry before 4-byte entry:
; CHECK: .p2align 3
; CHECK: LCPI
; CHECK: .long 2370821947
; CHECK: .long 1080815255
; CHECK: LCPI
; CHECK: .long 0x42f6e979
define void @func(float* nocapture %x, double* nocapture %y) nounwind ssp {
entry:
%0 = load float, float* %x, align 4
%add = fadd float %0, 0x405EDD2F20000000
store float %add, float* %x, align 4
%1 = load double, double* %y, align 4
%add1 = fadd double %1, 2.234560e+02
store double %add1, double* %y, align 4
ret void
}