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* [Bug target/103731] New: 390: inefficient 64-bit constant generation
@ 2021-12-15 9:52 jens.seifert at de dot ibm.com
2021-12-15 10:44 ` [Bug target/103731] " pinskia at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: jens.seifert at de dot ibm.com @ 2021-12-15 9:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103731
Bug ID: 103731
Summary: 390: inefficient 64-bit constant generation
Product: gcc
Version: 8.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jens.seifert at de dot ibm.com
Target Milestone: ---
unsigned long long M8()
{
return 0x8888888888888888;
}
Generates:
.LC0:
.quad 0x8888888888888888
.text
.align 8
.globl _Z2M8v
.type _Z2M8v, @function
_Z2M8v:
.LFB0:
.cfi_startproc
lgrl %r2,.LC0
br %r14
.cfi_endproc
Expected 2 instructions:
load immediate + insert immedate(IIHF) instead of LOAD
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug target/103731] 390: inefficient 64-bit constant generation
2021-12-15 9:52 [Bug target/103731] New: 390: inefficient 64-bit constant generation jens.seifert at de dot ibm.com
@ 2021-12-15 10:44 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-12-15 10:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103731
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-12-15 9:52 [Bug target/103731] New: 390: inefficient 64-bit constant generation jens.seifert at de dot ibm.com
2021-12-15 10:44 ` [Bug target/103731] " pinskia at gcc dot gnu.org
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