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--- hotspot/src/cpu/ppc/vm/stubGenerator_ppc.cpp.orig 2019-07-22 16:46:38 UTC
+++ hotspot/src/cpu/ppc/vm/stubGenerator_ppc.cpp
@@ -1212,12 +1212,6 @@ class StubGenerator: public StubCodeGenerator {
// Prefetch the data into the L2 cache.
__ dcbt(R3_ARG1, 0);
- // If supported set DSCR pre-fetch to deepest.
- if (VM_Version::has_mfdscr()) {
- __ load_const_optimized(tmp2, VM_Version::_dscr_val | 7);
- __ mtdscr(tmp2);
- }
-
__ li(tmp1, 16);
// Backbranch target aligned to 32-byte. Not 16-byte align as
@@ -1236,12 +1230,6 @@ class StubGenerator: public StubCodeGenerator {
__ addi(R4_ARG2, R4_ARG2, 32); // Update dsc+=32
__ bdnz(l_10); // Dec CTR and loop if not zero.
- // Restore DSCR pre-fetch value.
- if (VM_Version::has_mfdscr()) {
- __ load_const_optimized(tmp2, VM_Version::_dscr_val);
- __ mtdscr(tmp2);
- }
-
} // VSX
} // FasterArrayCopy
@@ -1481,11 +1469,6 @@ class StubGenerator: public StubCodeGenerator {
// Prefetch src data into L2 cache.
__ dcbt(R3_ARG1, 0);
- // If supported set DSCR pre-fetch to deepest.
- if (VM_Version::has_mfdscr()) {
- __ load_const_optimized(tmp2, VM_Version::_dscr_val | 7);
- __ mtdscr(tmp2);
- }
__ li(tmp1, 16);
// Backbranch target aligned to 32-byte. It's not aligned 16-byte
@@ -1504,12 +1487,6 @@ class StubGenerator: public StubCodeGenerator {
__ addi(R4_ARG2, R4_ARG2, 32); // Update dsc+=32.
__ bdnz(l_9); // Dec CTR and loop if not zero.
- // Restore DSCR pre-fetch value.
- if (VM_Version::has_mfdscr()) {
- __ load_const_optimized(tmp2, VM_Version::_dscr_val);
- __ mtdscr(tmp2);
- }
-
}
} // FasterArrayCopy
__ bind(l_6);
@@ -1674,12 +1651,6 @@ class StubGenerator: public StubCodeGenerator {
// Prefetch the data into the L2 cache.
__ dcbt(R3_ARG1, 0);
- // If supported set DSCR pre-fetch to deepest.
- if (VM_Version::has_mfdscr()) {
- __ load_const_optimized(tmp2, VM_Version::_dscr_val | 7);
- __ mtdscr(tmp2);
- }
-
__ li(tmp1, 16);
// Backbranch target aligned to 32-byte. Not 16-byte align as
@@ -1698,12 +1669,6 @@ class StubGenerator: public StubCodeGenerator {
__ addi(R4_ARG2, R4_ARG2, 32); // Update dsc+=32
__ bdnz(l_7); // Dec CTR and loop if not zero.
- // Restore DSCR pre-fetch value.
- if (VM_Version::has_mfdscr()) {
- __ load_const_optimized(tmp2, VM_Version::_dscr_val);
- __ mtdscr(tmp2);
- }
-
} // VSX
} // FasterArrayCopy
@@ -1821,12 +1786,6 @@ class StubGenerator: public StubCodeGenerator {
// Prefetch the data into the L2 cache.
__ dcbt(R3_ARG1, 0);
- // If supported set DSCR pre-fetch to deepest.
- if (VM_Version::has_mfdscr()) {
- __ load_const_optimized(tmp2, VM_Version::_dscr_val | 7);
- __ mtdscr(tmp2);
- }
-
__ li(tmp1, 16);
// Backbranch target aligned to 32-byte. Not 16-byte align as
@@ -1845,11 +1804,6 @@ class StubGenerator: public StubCodeGenerator {
__ stxvd2x(tmp_vsr1, R4_ARG2); // Store to dst
__ bdnz(l_4);
- // Restore DSCR pre-fetch value.
- if (VM_Version::has_mfdscr()) {
- __ load_const_optimized(tmp2, VM_Version::_dscr_val);
- __ mtdscr(tmp2);
- }
}
__ cmpwi(CCR0, R5_ARG3, 0);
@@ -1949,12 +1903,6 @@ class StubGenerator: public StubCodeGenerator {
// Prefetch the data into the L2 cache.
__ dcbt(R3_ARG1, 0);
- // If supported set DSCR pre-fetch to deepest.
- if (VM_Version::has_mfdscr()) {
- __ load_const_optimized(tmp2, VM_Version::_dscr_val | 7);
- __ mtdscr(tmp2);
- }
-
__ li(tmp1, 16);
// Backbranch target aligned to 32-byte. Not 16-byte align as
@@ -1973,12 +1921,6 @@ class StubGenerator: public StubCodeGenerator {
__ addi(R4_ARG2, R4_ARG2, 32); // Update dsc+=32
__ bdnz(l_5); // Dec CTR and loop if not zero.
- // Restore DSCR pre-fetch value.
- if (VM_Version::has_mfdscr()) {
- __ load_const_optimized(tmp2, VM_Version::_dscr_val);
- __ mtdscr(tmp2);
- }
-
} // VSX
} // FasterArrayCopy
@@ -2074,12 +2016,6 @@ class StubGenerator: public StubCodeGenerator {
// Prefetch the data into the L2 cache.
__ dcbt(R3_ARG1, 0);
- // If supported set DSCR pre-fetch to deepest.
- if (VM_Version::has_mfdscr()) {
- __ load_const_optimized(tmp2, VM_Version::_dscr_val | 7);
- __ mtdscr(tmp2);
- }
-
__ li(tmp1, 16);
// Backbranch target aligned to 32-byte. Not 16-byte align as
@@ -2098,11 +2034,6 @@ class StubGenerator: public StubCodeGenerator {
__ stxvd2x(tmp_vsr1, R4_ARG2); // Store to dst
__ bdnz(l_4);
- // Restore DSCR pre-fetch value.
- if (VM_Version::has_mfdscr()) {
- __ load_const_optimized(tmp2, VM_Version::_dscr_val);
- __ mtdscr(tmp2);
- }
}
__ cmpwi(CCR0, R5_ARG3, 0);