[PowerPC] Replace float load/store pair with integer load/store pair when it's only used in load/store
Replace float load/store pair with integer load/store pair when it's only used in load/store,
because float load/store instructions cost more cycles then integer load/store.
A typical scenario is when there is a call with more than 13 float arguments passing, we need pass them by stack.
So we need a load/store pair to do such memory operation if the variable is global variable.
Differential Revision: https://reviews.llvm.org/D64195
llvm-svn: 366775
diff --git a/llvm/test/CodeGen/PowerPC/float-load-store-pair.ll b/llvm/test/CodeGen/PowerPC/float-load-store-pair.ll
index 6a8bd8e..17e71c5 100644
--- a/llvm/test/CodeGen/PowerPC/float-load-store-pair.ll
+++ b/llvm/test/CodeGen/PowerPC/float-load-store-pair.ll
@@ -54,27 +54,27 @@
; CHECK-NEXT: addis 3, 2, a10@toc@ha
; CHECK-NEXT: lfd 10, a10@toc@l(3)
; CHECK-NEXT: addis 3, 2, a11@toc@ha
+; CHECK-NEXT: addis 6, 2, a17@toc@ha
+; CHECK-NEXT: addis 5, 2, a16@toc@ha
+; CHECK-NEXT: addi 6, 6, a17@toc@l
+; CHECK-NEXT: addi 5, 5, a16@toc@l
+; CHECK-NEXT: lxvx 34, 0, 6
+; CHECK-NEXT: addis 4, 2, a15@toc@ha
+; CHECK-NEXT: lxvx 0, 0, 5
+; CHECK-NEXT: ld 4, a15@toc@l(4)
+; CHECK-NEXT: li 5, 168
; CHECK-NEXT: lfd 11, a11@toc@l(3)
; CHECK-NEXT: addis 3, 2, a12@toc@ha
; CHECK-NEXT: lfd 12, a12@toc@l(3)
; CHECK-NEXT: addis 3, 2, a13@toc@ha
; CHECK-NEXT: lfd 13, a13@toc@l(3)
; CHECK-NEXT: addis 3, 2, a14@toc@ha
-; CHECK-NEXT: lfd 0, a14@toc@l(3)
-; CHECK-NEXT: addis 3, 2, a15@toc@ha
-; CHECK-NEXT: addis 4, 2, a17@toc@ha
-; CHECK-NEXT: addi 4, 4, a17@toc@l
-; CHECK-NEXT: lxsd 2, a15@toc@l(3)
-; CHECK-NEXT: addis 3, 2, a16@toc@ha
-; CHECK-NEXT: addi 3, 3, a16@toc@l
-; CHECK-NEXT: lxvx 36, 0, 4
-; CHECK-NEXT: lxvx 35, 0, 3
-; CHECK-NEXT: li 3, 168
-; CHECK-NEXT: stxvx 36, 1, 3
-; CHECK-NEXT: li 3, 152
-; CHECK-NEXT: stxvx 35, 1, 3
-; CHECK-NEXT: stxsd 2, 144(1)
-; CHECK-NEXT: stfd 0, 136(1)
+; CHECK-NEXT: ld 3, a14@toc@l(3)
+; CHECK-NEXT: stxvx 34, 1, 5
+; CHECK-NEXT: li 5, 152
+; CHECK-NEXT: stxvx 0, 1, 5
+; CHECK-NEXT: std 4, 144(1)
+; CHECK-NEXT: std 3, 136(1)
; CHECK-NEXT: bl _Z3fooddddddddddddddd
; CHECK-NEXT: nop
; CHECK-NEXT: li 3, 0