Files
clang-p2996/llvm/test/CodeGen/SystemZ/combine_loads_from_build_pair.ll
Kai Nacke a1710eb3cd [SystemZ][NFC] Opaque pointer migration.
The LIT test cases were migrated with the script provided by
Nikita Popov.

No manual changes were made. Committed without review since
no functional changes, after consultation with uweigand.
2022-10-11 21:09:43 +00:00

23 lines
981 B
LLVM

; RUN: llc -verify-machineinstrs -mtriple=s390x-linux-gnu < %s -debug -stop-after=machineverifier 2>&1 | FileCheck %s
; REQUIRES: asserts
define i128 @func1({ i128, ptr } %struct) {
; Verify that we get a combine on the build_pair, creating a LD8 load somewhere
; between "Initial selection DAG" and "Optimized lowered selection DAG".
; The target is big-endian, and stack grows towards higher addresses,
; so we expect the LD8 to load from the address used in the original HIBITS
; load.
; CHECK-LABEL: Initial selection DAG:
; CHECK: [[LOBITS:t[0-9]+]]: i64,ch = load<(load (s64))>
; CHECK: [[HIBITS:t[0-9]+]]: i64,ch = load<(load (s64))>
; CHECK: Combining: t{{[0-9]+}}: i128 = build_pair [[LOBITS]], [[HIBITS]]
; CHECK-NEXT: Creating new node
; CHECK-SAME: load<(load (s128), align 8)>
; CHECK-NEXT: into
; CHECK-SAME: load<(load (s128), align 8)>
; CHECK-LABEL: Optimized lowered selection DAG:
%result = extractvalue {i128, ptr } %struct, 0
ret i128 %result
}